Letter Puzzles With Answers

Letter Puzzles With Answers 1 : Puzzle In A Puzzle
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What are the next two letters in the following series and why?
W A T N T L I T F S _ _
*Hint: Check Puzzle Title

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     Answer & Explanation

Solution:
The letters are the first letters of the words in the question. Thus, the next two letters are A and W.

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Letter Puzzles With Answers 2 : Crazy Interview Riddle
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An interview was conducted to test the structure, usage and competence of all the English Letters. To do this, each letter was interviewed for one hour in sequence and the interview was expected to take a whole day. Letter A was the first, then B, C, D ... till letter X which rounded off the interview. Why was letter Y and Z left out?

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     Answer & Explanation

Solution:
There are 24 hours in a day and 26 Letters. Each letter is allotted one hour. Hence, letter Y and Z could not be interviewed because both exceeded the 24 hours Standard Time. Letter Y and Z are 25th and 26th respectively.

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Letter Puzzles With Answers 3 : What Word Riddle
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Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I’m double, I’m single,
I’m black blue and gray,
I’m read from both ends,
And the same either way.

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     Answer & Explanation

Solution:
Eye

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Letter Puzzles With Answers 4 : Nine Letter Word Riddle
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I know a nine letter word having only one vowel.
Do you ?

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     Answer & Explanation

Solution:
Strengths

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Letter Puzzles With Answers 5 : What Am I Looking For
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I am a ten letters word
The first four letters has power to rule,
Next four letter can be eaten.
Next three letter represents a lady.
I can fly as well

what am i looking for ?

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     Answer & Explanation

Solution:
Kingfisher

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Letter Puzzles With Answers 6 : Read Between The Lines
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This is an unusual paragraph. I'm curious how quickly you can find out what is so unusual about it. It looks so plain you would think nothing was wrong with it. In fact, nothing is wrong with it! It is unusual though. Study it, and think about it, but you still may not find anything odd. But if you work at it a bit, you might find out.

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     Answer & Explanation

Solution:
the letter 'e', which is the most common letter in the English language, does not appear once in the long paragraph...

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Letter Puzzles With Answers 7 : Quick Thinking Riddle
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Without looking at a calendar, within a minute name a boys name using 5 consecutive 1st letters of 5 consecutive months

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     Answer & Explanation

Solution:
JASON----July August September October November

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Letter Puzzles With Answers 8 : Awesome Who Am I Riddle
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I am five letter word that is under you.
If you remove my 1st letter, then i am over you.
If you remove my 1st and 2nd letters than i am all around you.

Who am i ?

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     Answer & Explanation

Solution:
Chair.

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Letter Puzzles With Answers 9 : Number Series Problem
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What number comes next in this sequence:
7 8 5 5 3 4 4 ?

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     Answer & Explanation

Solution:
6- the number of letters in the month august; (January has 7 letters, February has 8 etc.)

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Letter Puzzles With Answers 10 : Logic Word Puzzle
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You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

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     Answer & Explanation

Solution:
Queue (remove the last four letters – the pronunciation is the same)

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Letter Riddles With Answers

Letter Riddles With Answers 1 : What Word Am I Puzzle
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I am a 6 letter word.
Letters 6-5-2 spell out a drink,
Letters 4-5-2-3 spell out a fruit,
Letters 1-2-6 spell out a pet,
Letters 3-2-6 spell out a pest,which often gets eaten by 1-2-6
What am I ?

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     Answer & Explanation

Solution:
Carpet

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Letter Riddles With Answers 2 : Funny Riddle
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IT'S A 7 LETTER WORD.
IF WE REMOVE 1 LETTER FROM IT, IT REMAINS SAME.
IF WE REMOVE 2 LETTERS FROM IT, IT REMAINS SAME.
IF WE REMOVE 3 LETTERS FROM IT, IT REMAINS SAME.
IF WE REMOVE ALL THE LETTERS FROM IT, STILL IT REMAINS SAME.
WHATZ IT ?

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     Answer & Explanation

Solution:
POSTBOX

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Letter Riddles With Answers 3 : Stupid Answer Riddle
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What is the center of gravity ?

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     Answer & Explanation

Solution:
The Letter 'V'

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Letter Riddles With Answers 4 : What Am I Question
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What has one letter and starts with an E?

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     Answer & Explanation

Solution:
An Envolope

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Letter Riddles With Answers 5 : December Riddle
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What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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     Answer & Explanation

Solution:
The letter 'n'.

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Letter Riddles With Answers 6 : What Word Am I Thinking Of
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I am thinking of a seven letter word which we read almost daily.
Letter 5 6 and 7 increases every year.
Letter 3 and 4 are the same.
Letter 3 2 and 5 covers about 70 percent of the world.

What word i am thinking of ?

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     Answer & Explanation

Solution:
Message

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Letter Riddles With Answers 7 : Lolz Funny Riddle
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An eight year old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

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     Answer & Explanation

Solution:
All he need to do is add a letter G before ONE and it will be GONE.

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Letter Riddles With Answers 8 : Next Number In Series
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What letter is next in this sequence?
M, A, M, J, J, A, S, O,__

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     Answer & Explanation

Solution:
N for November!

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Letter Riddles With Answers 9 : QuickFire Riddle
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What five-letter word becomes shorter when you add two letters to it?

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     Answer & Explanation

Solution:
Short

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Letter Riddles With Answers 10 : Missing Letter Riddle
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What's the missing letter?
J ? M A M J J A S O N D

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     Answer & Explanation

Solution:
F

Explanation: The letters are the first letter of each of the twelve months. The second month is February.

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Rhyming Music Riddles With Answers

Rhyming Music Riddles With Answers 1 : What Are We
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We can be boring,
Or interesting.
We can be long,
Or short.
We can have pictures,
Or just words.
Many love us,
But many also hate us.

What are we?

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     Answer & Explanation

Solution:
Books

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Rhyming Music Riddles With Answers 2 : What Am I
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Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

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     Answer & Explanation

Solution:
The Past

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Rhyming Music Riddles With Answers 3 : Simple What Am I Riddle
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I am in the beginning of the earth.
I am at the end of the time.
I appear two times in a week.
I appear once in a year.

What Am I ?

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     Answer & Explanation

Solution:
Letter 'E'

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Rhyming Music Riddles With Answers 4 : Who Am I Poem Riddle
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Simultaneously I go up, I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children loves me.

Who Am i ?

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     Answer & Explanation

Solution:
See Saw

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Rhyming Music Riddles With Answers 5 : Poem Who Am I Riddle
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I have a mouth but i don't eat.
I have a bank but have no money.
I have a bed but i don't sleep.
I wave but have no hands.

Who Am I ?

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     Answer & Explanation

Solution:
A River

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Rhyming Music Riddles With Answers 6 : What Am I Problem
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I have forests, but no trees.
I have lakes, but no water.
I have roads, but no cars.

What Am I?

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     Answer & Explanation

Solution:
A Map

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Rhyming Music Riddles With Answers 7 : Murder Mystery Humour Riddle
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A donkey behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

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     Answer & Explanation

Solution:
Ass ass i nation
Assassination

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Rhyming Music Riddles With Answers 8 : Sound Series Pattern
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Can you figure out the logic I used to decide the order of the following words: gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

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     Answer & Explanation

Solution:
Each word rhymes with its numeric position in the list. (e.g. 'gun' rhymes with 'one', etc.)

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Rhyming Music Riddles With Answers 9 : Comedy Problem
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What did baby corn say to his Mom?

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     Answer & Explanation

Solution:
Where is pop-corn.

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Rhyming Music Riddles With Answers 10 : Comic Problem
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Why did Mayank Kapoor keep his trumpet in the fridge?

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     Answer & Explanation

Solution:
Because he like playing cool music

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Impossible Unsolvable Riddles With Answers

Impossible Unsolvable Riddles With Answers 1 : Impossible Riddle To Solve
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If this sentence is not true then I can fly like superman.

As per the above sentence, can I fly like superman ?

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     Answer & Explanation

Solution:
There is no answer to this question as it is a paradox.

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Impossible Unsolvable Riddles With Answers 2 : Paradox Probability Puzzle
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This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

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     Answer & Explanation

Solution:
There are six possible pairings of the two balls withdrawn, RED+RED, RED+WHITE, WHITE+RED, RED+BLUE, BLUE+RED, WHITE+BLUE. We know that the WHITE + BLUE combination has not been drawn. This leaves five possible combinations remaining. Therefore the chances that the RED + RED pairing has been drawn are 1 in 5. Many people cannot accept that the solution is not 1 in 3, and of course it would be, if the balls had been drawn out separately and the color of the first ball announced as red before the second had been drawn out. However, as both balls had been drawn together, and then the color of one of the balls announced, then the above solution, 1 in 5, must be the correct one.

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Impossible Unsolvable Riddles With Answers 3 : Picture Paradox Riddle
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Solve the riddle in the picture below

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     Answer & Explanation

Solution:
Its a paradox

A paradox is a sentence that contradicts itself and yet might be true

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Impossible Unsolvable Riddles With Answers 4 : Worlds Best Paradox Riddle
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Outside a tattoo artist's shop there was a signboard which read 'I make tattoos on only them who do not tattoo themselves'.

Reading it what do you think, does the tattoo artist tattoo himself ?

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     Answer & Explanation

Solution:
Well this is a paradox sentence which does not have any specific answer.

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Impossible Unsolvable Riddles With Answers 5 : Paradox Riddle
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I am lying and i always lies.Tell me whether i am lying or telling the truth ?

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     Answer & Explanation

Solution:
Its a famous paradox riddle , which always contradicts itself.

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Induction Puzzles With Answers

Induction Puzzles With Answers 1 : Probability Riddle Loaded Revolver
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Henry has been caught stealing cattle, and is brought into town for justice. The judge is his ex-wife Gretchen, who wants to show him some sympathy, but the law clearly calls for two shots to be taken at Henry from close range. To make things a little better for Henry, Gretchen tells him she will place two bullets into a six-chambered revolver in successive order. She will spin the chamber, close it, and take one shot. If Henry is still alive, she will then either take another shot, or spin the chamber again before shooting.

Henry is a bit incredulous that his own ex-wife would carry out the punishment, and a bit sad that she was always such a rule follower. He steels himself as Gretchen loads the chambers, spins the revolver, and pulls the trigger. Whew! It was blank. Then Gretchen asks, 'Do you want me to pull the trigger again, or should I spin the chamber a second time before pulling the trigger?'

What should Henry choose?

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     Answer & Explanation

Solution:
Henry should have Gretchen pull the trigger again without spinning.

We know that the first chamber Gretchen fired was one of the four empty chambers. Since the bullets were placed in consecutive order, one of the empty chambers is followed by a bullet, and the other three empty chambers are followed by another empty chamber. So if Henry has Gretchen pull the trigger again, the probability that a bullet will be fired is 1/4.

If Gretchen spins the chamber again, the probability that she shoots Henry would be 2/6, or 1/3, since there are two possible bullets that would be in firing position out of the six possible chambers that would be in position.

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Induction Puzzles With Answers 2 : River Riddle
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Four people need to cross a dark river at night.They have only one torch and the river is too risky to cross without the tourch. if all people cross simultanoesly then torch light wont be sufficient.Speed of each person of crossing the river is different.cross time for each person is 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the river ?

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     Answer & Explanation

Solution:
The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.

Let's brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let's put all this together.

1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)

Total time = 2 + 2 + 10 + 1 + 2 = 17 mins

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Induction Puzzles With Answers 3 : Popular Liar Truth Riddle
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Suarez is a strange liar.

He lies on six days of the week, but on the seventh day he always tells the truth.

He made the following statements on three successive days:

Day 1: 'I lie on Monday and Tuesday.'
Day 2: 'Today, it's Thursday, Saturday, or Sunday.'
Day 3: 'I lie on Wednesday and Friday.'

On which day does Suarez tell the truth?

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     Answer & Explanation

Solution:
Tuesday

We know that Suarez tells the truth on only a single day of the week. If the statement on day 1 is untrue, this means that he tells the truth on Monday or Tuesday. If the statement on day 3 is untrue, this means that he tells the truth on Wednesday or Friday. Since Suarez tells the truth on only one day, these statements cannot both be untrue. So, exactly one of these statements must be true, and the statement on day 2 must be untrue.
Assume that the statement on day 1 is true. Then the statement on day 3 must be untrue, from which follows that Suarez tells the truth on Wednesday or Friday. So, day 1 is a Wednesday or a Friday. Therefore, day 2 is a Thursday or a Saturday. However, this would imply that the statement on day 2 is true, which is impossible. From this we can conclude that the statement on day 1 must be untrue.

This means that Suarez told the truth on day 3 and that this day is a Monday or a Tuesday. So day 2 is a Sunday or a Monday. Because the statement on day 2 must be untrue, we can conclude that day 2 is a Monday.

So day 3 is a Tuesday. Therefore, the day on which Suarez tells the truth is Tuesday.

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Induction Puzzles With Answers 4 : Tricky Murder Mystery Logical Riddle
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Four boys were playing a game in which they need to throw the stone in the water so that the stone at don't get sunk into the water(there is some solid area in water).
Boy1: Succeeded in throwing 2 stones at solid area but 1 of the stone sunk.
Boy3: All stones got sunk.
Boy4: None of the stones got sunk.

Boy2 was the winner but was struck by a stone in the head and died.

Who killed Boy2 ?

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Induction Puzzles With Answers 5 : Trick Teaser Ias Interview Question
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A Sweet girl purchased a book from a bookkeeper and give him Rs. 100.
The cost of book is Rs.30 but the bookkeeper had got no change, so he get the change from next shop and return the girl her 70 Rupees.

After some time time the next shopkeeper comes with the 100Rs note and told the bookkeeper that the note is fraud, so he takes money back.

How much loss did the bookkeeper face ?

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     Answer & Explanation

Solution:
100Rs

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Induction Puzzles With Answers 6 : Awesome Idea Puzzle Problem
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Dwayne Johnson was running away with the loot from a heist in his car along with Vin Diesel. One tire was punctured and he dropped down to replace it. While changing the wheel, he dropped the four nuts that were holding the wheel and they fell into a drain. Vin Diesel gave him an idea using which they were able to drive till the rendezvous point.

What was the idea ?

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     Answer & Explanation

Solution:
Vin Diesel told him to use one nut from each of the other wheels.

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Induction Puzzles With Answers 7 : Measuring Time Interview Problem
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I possess two wires. Both of them have an inconstant thickness but both of them burns completely in sixty minutes. The problem is that I want to measure forty-five minutes while using these two wires.

How can I measure if cutting the wire in half is not possible due to non-homogeneous construction ?

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     Answer & Explanation

Solution:
45minutes

It is not as hard as it seems. I will burn one wire on both ends and the other wire at one end only. The first wire will burn completely in thirty minutes and at that very moment, I will burn the other end of the second wire and it will burn in fifteen minutes. Thus both of the wires will be burnt in 30 + 15 = 45 minutes.

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Induction Puzzles With Answers 8 : Great Logic Riddle
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Q1. Identify the first question where c) is the accurate answer
a) Q3
b) Q4
c) Q1
d) Q2

Q2. Identify the first question where a) is the accurate answer
a) Q4
b) Q2
c) Q3
d) Q1

Q3. Identify the first question where d) is the accurate answer
a) Q1
b) Q2
c) Q4
d) Q3

Q4. Identify the first question where b) is the accurate answer
a) Q2
b) Q4
c) Q3
d) Q1

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     Answer & Explanation

Solution:
D
C
A
B

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Induction Puzzles With Answers 9 : Aeroplane Hijack puzzle
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A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

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     Answer & Explanation

Solution:
If the officials thought he was jumping with a hostage, they would never risk giving him a faulty parachute.

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Induction Puzzles With Answers 10 : Famous Elevator Puzzle
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A man who lives on the tenth floor takes the elevator down to the first floor every morning and goes to work. In the evening, when he comes back; on a rainy day, or if there are other people in the elevator, he goes to his floor directly. Otherwise, he goes to the seventh floor and walks up three flights of stairs to his apartment.
Can you explain why?

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     Answer & Explanation

Solution:
The man is a of short stature. He can't reach the upper elevator buttons, but can push is with his umbrella.

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Long Riddles With Answers

Long Riddles With Answers 1 : Alexander Puzzle
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Alexander is stranded on an island covered in forest.

One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alexander survive the fire? (There are no buckets or any other means to put out the fire)

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     Answer & Explanation

Solution:
Alexander picks up a piece of wood and lights it from the fire on the west end of the island.

He then quickly carries it near the east end of he island and starts a new fire. The wind will cause that fire to burn out the eastern end and he can then shelter in the burnt area.

Alexander survives the fire, but dies of starvation, with all the food in the forest burnt....lolzzz

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Long Riddles With Answers 2 : November Riddle
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A man is sitting in a pub feeling rather poor. He sees the man next to him pull a wad of £50 notes out of his wallet.
He turns to the rich man and says to him,
'I have an amazing talent; I know almost every song that has ever existed.'
The rich man laughs.
The poor man says, 'I am willing to bet you all the money you have in your wallet that I can sing a genuine song with a lady's name of your choice in it.'
The rich man laughs again and says, 'OK, how about my daughter's name, Joanna Armstrong-Miller?'
The rich man goes home poor. The poor man goes home rich.

What song did he sing?

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     Answer & Explanation

Solution:
Happy Birthday

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Long Riddles With Answers 3 : Monty Hall Problem Puzzle
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The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

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     Answer & Explanation

Solution:
You better switch!

Your first choice has a 1/3 chance of having the car, and that does not change.
The other two doors HAD a combined chance of 2/3, but now a Goat has ben revealed behind one, all the 2/3 chance is with the other door.

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Long Riddles With Answers 4 : No Uninvited Guest Puzzle
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Queen Elizabeth organized a royal party.

To Avoid uninvited guest royal family set a password.
Wayne (an uninvited person) plan to enter the party. He stand nearby the door.

First guest comes, the security person said 'twelve' and guest replied with six.
Second guest comes , the security person said 'six' and guest replied with 'three'.

Wayne thought is enough and he walked to the entry point. The security person said 'eight' , Wayne replied smilingly 'four'.
He was immediately thrown out of the party.

why ?

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     Answer & Explanation

Solution:
'five'

password is not half , rather the sum of digit.

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Long Riddles With Answers 5 : Prison Break Riddle
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Two prisoners 'Lincoln Burrows' and 'Michael Scofield' are locked in a cell.
There is open window approx 30 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Scofield comes with the different plan and they escaped.

what was the plan ?

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     Answer & Explanation

Solution:
They use the dirt and bricks from the tunnel and stand on it then one on top of the other.

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Long Riddles With Answers 6 : Logic Puzzle Riddle
Difficulty ★★★☆☆        Popularity ★★★★★

There are two arch enemy Messi and Ronaldo which hate each other to an extreme.
One day two are going together and a Jeanie appeared in from of them them.
Jeanie grant 3 wishes to Ronaldo and one to Messi.

Messi replied smartly 'Give me twice of whatever Ronaldo demands'.

Ronaldo asked his 1st wish 'Give me 10000 billion dollar'. Soon Messi gets 2000 billion dollar.
Ronaldo asked his 2nd wish 'Give me one mansion in every country of the world'. Soon Messi gets two mansion in every country of the world?

Whats should be Ronaldo third wish ?

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     Answer & Explanation

Solution:
He askes the Jeanie to beat him half to death.

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Long Riddles With Answers 7 : Logic Escape Problem
Difficulty ★★★★☆        Popularity ★★★★★

In the kingdom of skull, King Norse did not allow any citizen to visit the world outside. Also only a person with a proper paperwork was allowed to enter or he was sent back. A wooden bridge was what connected the kingdom to the world. The king had appointed a sharpshooter who would check every five minutes on the bridge to check. After checking, he would go back to his hut and return exactly after five minutes again. The bridge took 9 minutes to cross.

A merchant was able to escape the kingdom without harming the shooter.

How ?

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     Answer & Explanation

Solution:
The merchant walked across the bridge for almost five minutes when the shooter was inside the bridge. Then he turned and started walking back to the kingdom of skull. On approaching the kingdom, he was asked of papers which he never had. Thus he was sent back.

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Long Riddles With Answers 8 : Trolls Riddle
Difficulty ★☆☆☆☆        Popularity ★★★★☆

You are on your way to visit your Grandma, who lives at the end of the valley. It's her birthday, and you want to give her the cakes you've made.

Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.

How many cakes do you have to leave home with to make sure that you arrive at Grandma's with exactly 2 cakes?

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Long Riddles With Answers 9 : Murder Mystery Problem
Difficulty ★★★☆☆        Popularity ★★★★☆

One evening there was a murder in the home of married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

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     Answer & Explanation

Solution:
mother

We know from (3) that the youngest person was not the victim, from (4) that the youngest person was not the helper and from (6) that the youngest person was not the killer. The youngest person can only have been the witness therefore. If we make up a chart there are now three possible combinations:

Oldest person (father) H H M

Next to oldest (mother) V M H

Next to youngest (son) M V V

Youngest (daughter) W W W

(H = Helper ; V = Victim ; M = Murderer ; W = Witness)

We can work out from (5) that the father was the oldest, from (2) that the youngest person must have been the daughter. Therefore the next to the youngest must have been the son and the next to the oldest, the mother.

Of three possibilities: the first is impossible (from (3) – the youngest person and the victim were of different sexes); the third is also impossible (from (1) – the witness and the helper were of different sexes). Therefore only the second possibility holds – and the mother was the murderess.

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Long Riddles With Answers 10 : Tricky Password Teaser
Difficulty ★★☆☆☆        Popularity ★★★★☆

There was some system error in a mailing website because of which passwords of some clients got changed.
Here is a conversation between a client and mailing-website executive person.

Client : My password is altered.
Client : I am not able to logged-in.
Executive : The password is distinct this time and it got eight letters , out of which two are same of your previous password.
Client: thanks , now i am able to logged-in.

Whats the client old and new passwords ?

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     Answer & Explanation

Solution:
Old password : distinct , New Password : altered :p

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Logical Reasoning Problems With Answers

Logical Reasoning Problems With Answers 1 : Challenging Puzzle
Difficulty ★★★★☆        Popularity ★★★★★

Outside a room there are three light switches. One of switch is connected to a light bulb inside the room.
Each of the three switches can be either 'ON' or 'OFF'.

You are allowed to set each switch the way you want it and then enter the room(note: you can enter the room only once)

Your task is to then determine which switch controls the bulb ??

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     Answer & Explanation

Solution:
Set the first switches on for abt 10min, and then switch on the second switch and then enter the room.
Three cases are possible
1.Bulb is on => second switch is the ans
2.Bulb is off and on touching bulb , you will find bulb to be warm
=>1st switch is the ans.
3.Bulb is off and on touching second bulb , you will find bulb to be normal(not warm)
=>3rd bulb is the ans.

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Logical Reasoning Problems With Answers 2 : Hardest Balance Logic Puzzle
Difficulty ★★★★★        Popularity ★★★★★

You are given a set of scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other.
The 12 marbles appear to be identical. In fact, 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more.

Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light.

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     Answer & Explanation

Solution:
So that the following plan can be followed, let us number the coins from 1 to 12. For the first weighing let us put on the left pan coins 1,2,3,4 and on the right pan coins 5,6,7,8.

There are two possibilities. Either they balance, or they don't. If they balance, then the different coin is in the group 9,10,11,12. So for our second one possibility is to weigh 9,10,11 against 1,2,3

(1) They balance, in which case you know 12 is the different coin, and you just weigh it against any other to determine whether it is heavy or light.
(2) 9,10,11 is heavy. In this case, you know that the different coin is 9, 10, or 11, and that that coin is heavy. Simply weigh 9 against 10; if they balance, 11 is the heavy coin. If not, the heavier one is the heavy coin.
(3) 9,10,11 is light. Proceed as in the step above, but the coin you're looking for is the light one.

That was the easy part.

What if the first weighing 1,2,3,4 vs 5,6,7,8 does not balance? Then any one of these coins could be the different coin. Now, in order to proceed, we must keep track of which side is heavy for each of the following weighings.

Suppose that 5,6,7,8 is the heavy side. We now weigh 1,5,6 against 2,7,8. If they balance, then the different coin is either 3 or 4. Weigh 4 against 9, a known good coin. If they balance then the different coin is 3, otherwise it is 4. The direction of the tilts can tell us whwther the offending coin is heavier or lighter.

Now, if 1,5,6 vs 2,7,8 does not balance, and 2,7,8 is the heavy side, then either 7 or 8 is a different, heavy coin, or 1 is a different, light coin.

For the third weighing, weigh 7 against 8. Whichever side is heavy is the different coin. If they balance, then 1 is the different coin. Should the weighing of 1,5, 6 vs 2,7,8 show 1,5,6 to be the heavy side, then either 5 or 6 is a different heavy coin or 2 is a light different coin. Weigh 5 against 6. The heavier one is the different coin. If they balance, then 2 is a different light coin.

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Logical Reasoning Problems With Answers 3 : Two Door Riddle
Difficulty ★★☆☆☆        Popularity ★★★★★

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

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     Answer & Explanation

Solution:
If you ask the guard who always tells the truth, he would tell you the other guard would point you to the door of death. If you ask the guard who always lies, he would tell you the opposite door of the truth-telling guard and point you to the door of death. In either case, both guards will point to the door of death so you should choose the other one.

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Logical Reasoning Problems With Answers 4 : Classic Logical Interview Puzzle
Difficulty ★★★☆☆        Popularity ★★★★★

I have two rectangular wires.
Both of them have property that when i light the fire from one end , it will take 60 minutes to get completely burn.
However they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could i measure 45 minutes ?

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     Answer & Explanation

Solution:
Steps:
A) burn 1st wire from both end and 2nd wire from one end
B) After 30 minutes(when 1st wire gets completely burned out) , burn the second wire from 2nd end as well
C) when 2nd run completely gets burned , you know its 45 minutes.

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Logical Reasoning Problems With Answers 5 : Tricky Probability Interview Puzzle
Difficulty ★★★☆☆        Popularity ★★★★★

I have two coins.
* One of the coin is a faulty coin having tail on both side of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blind fold myself and pick a coin and put the coin on table. The face of coin towards the sky is tail.

What is the probability that other side is also tail ?

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     Answer & Explanation

Solution:
2/3

2 possible scenario are :
case number side shown other side
1 A1 (H) A2 (H)
2 A2 (H) A1 (H)
3 B1 (H) B2 (T)
4 B2 (T) B1 (H)

case 4 is not possible so ans is 2/3

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Logical Reasoning Problems With Answers 6 : Sherlock Holmes Murder Mystery Riddle
Difficulty ★★★★☆        Popularity ★★★★★

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great lord....following a gunshot.

Sherlock smiles Of-course its a murder.

Why did he think so?

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     Answer & Explanation

Solution:
How can a dead person rewind back the tape himself ?

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Logical Reasoning Problems With Answers 7 : Water Jugs Problem
Difficulty ★★☆☆☆        Popularity ★★★★☆

Six jugs are in a row.
The first three are filled with coke, and the last three are empty.
By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

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     Answer & Explanation

Solution:
Move and then pour all coke from second glass to fifth glass.

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Logical Reasoning Problems With Answers 8 : Cross Bridge Puzzle
Difficulty ★★★★☆        Popularity ★★★★☆

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

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     Answer & Explanation

Solution:
17 mins

The initial solution most people will think of is to use the fastest person as an usher to guide everyone across. How long would that take? 10 + 1 + 7 + 1 + 2 = 21 mins. Is that it? No. That would make this question too simple even as a warm up question.

Let’s brainstorm a little further. To reduce the amount of time, we should find a way for 10 and 7 to go together. If they cross together, then we need one of them to come back to get the others. That would not be ideal. How do we get around that? Maybe we can have 1 waiting on the other side to bring the torch back. Ahaa, we are getting closer. The fastest way to get 1 across and be back is to use 2 to usher 1 across. So let’s put all this together.

1 and 2 go cross
2 comes back
7 and 10 go across
1 comes back
1 and 2 go across (done)

Total time = 2 + 2 + 10 + 1 + 2 = 17 mins

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Logical Reasoning Problems With Answers 9 : NewsPaper Puzzle
Difficulty ★★★☆☆        Popularity ★★★★☆

A newspaper is supposed to have 60 pages
but pages 24 and 41 are missing.
Which other pages won't be there?

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     Answer & Explanation

Solution:
Pages 19, 20, 23, 37, 38, & 42 will also be missing

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Logical Reasoning Problems With Answers 10 : Thinking Puzzle
Difficulty ★★★★☆        Popularity ★★★★☆

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady who looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

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     Answer & Explanation

Solution:
The old lady of course! After helping the old lady into the car, you can give your keys to your friend, and wait with your perfect partner for the bus

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