Math Logic Problem

Math Logic Time Problem - 1 February

In a modern art gallery, an artist has numerous modern art paintings created by him. He hangs different painting on the space provided to him periodically. When the clock hit 11 am, he hung the painting number 30. When it struck 4 pm, he hung the painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm ?


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Crack The Code Puzzle

Crack The Code Puzzle - 31 January

During a secret mission, an agent gave the following code to the higher authorities
AIM DUE OAT TIE MOD

However the information is in one word only and the rest are fake. To assist the authorities in understanding better, he also sent them a clue – If I tell you any one character of the code, you can easily find out the number of vowels in the code word.

Can you find out the code word?


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Adobe Cool Logical Interview Puzzle

Adobe Cool Logical Interview Puzzle - 30 January

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with capacity 4 liters, 8 liters and 10 liters and you have a large tank of water. Now you have to measure 3 liters of water precisely using those buckets. How will you do it?

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Mind Boggling Riddle

Mind Boggling Riddle - 29 January

Sai caught 10 fishes without an I,
9 were deprived of tail
6 were headless
And half of 8
He weighed on a trusted scale
Can you find out if he asks you?

How many fishes were there in his basket ?


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Math Figure Puzzle

Math Figure Puzzle - 28 January

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?


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Easy Chemistry Rebus

Easy Chemistry Rebus - 27 January

What does below chemistry rebus means ?


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Tricky Logical Puzzle

Tricky Logical Puzzle - 26 January

I have one of the three numbers: 1, 2 or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number ?


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Suicide Riddle

Suicide Riddle - 25 January

A man is found dead. When the investigation is done, he is found dead with a knife in his back. A chair sits beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?


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Maths Brain Twister

Maths Brain Twister - 24 January

Two natural numbers are having a sum less than 100 and are both greater than one.

Ned knows the product of the numbers and Shawn knows the sum of numbers.

The following conversation takes place between them:
Ned: 'I am not aware of those numbers.'
Shawn: 'I knew you wouldn't be. I am not aware myself.'
Ned: 'Now I know them!'
Shawn: 'Now I know them, too!'

What are the two numbers?


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Famous Probability Problem

Famous Probability Problem - 23 January

You are offered an opportunity of winning a fortune. There are 100 precious black stones and 100 unworthy white stones. There are two different sacks labelled as 'Heads' and 'Tails'. You can distribute the stones as per you wish. Then a coin will be flipped. Then you will have to choose a stone from the corresponding sack. If you pick up a black stone, all the fortune of black stones is yours but if you pick up white, you get nothing.

How will you distribute the stones so that you can maximize your chances of winning?

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Short Murder Mystery Riddle

Short Murder Mystery Riddle - 22 January

In a party, two friends ordered single malt whiskey on the rocks. One of them drank five of the same in the time when his friend was able to drink only one. Immediately after, his friend died. However the other one was feeling completely normal.

Both the drinks were poisoned. How did the guy who drink five glasses survived?


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Wise Rebus Riddle

Wise Rebus Riddle - 21 January

What does the below rebus riddle means ?


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IQ Riddle

IQ Riddle - 20 January

It's a test that will check your IQ.
Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?


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Easy Science Rebus

Easy Science Rebus - 19 January

What dies below science rebus means ?

Ag        Ag        Ag
Ag    SPOON   Ag
Ag        Ag        Ag

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Long Disgusting Riddle

Long Disgusting Riddle - 18 January

Andrew was absent from school for most of the days and thus the principal called him. He asked Andrew for an explanation to which Thomas replied the following:

I don't have enough to attend school. I must have eight hours of sleep every day and if added for 365 days, it makes 122 days in a year. We have weekends off adding to 104 days of the year. The summer holidays are roughly 60 days. I take an hour for each meal adding to 3 hours a day and 45 days a year. I must spend 2 hours every day for exercising and recreation to stay physically and mentally fit which adds up to 30 days in a year.

If you add all of them, you will get 361 days as the answer. So I am left with only 4 days to attend the school.

Though the principal knows that Andrew is messing with his head, he is unable to point where Andrew is going wrong. Can you tell how he is calculating in a wrong manner?

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Sherlock Holmes The Sign of Three Logic Riddle

Sherlock Holmes The Sign of Three Logic Riddle - 17 January

A man is found murdered in his bathroom naked with blood scattered all around him. The bathroom was locked from inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much of blood loss.

The Police department is clueless regarding this murder mystery. But Sherlock solve the case.
Can you ?

Spoiler Alert : Inspired by Sherlock Holmes Season 3 Episode 2 (The Sign of Three)


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Cute Riddle

Cute Riddle - 16 January

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with empty pot as the queen of the empire. Why?


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Trick Pictogram Riddle

Trick Pictogram Riddle - 15 January

What does below pictogram riddle means ?













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Alternating Number Series Puzzle

Alternating Number Series Puzzle - 14 January

Find the missing number in the series below

13   -21    34    -55    ?    -144
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Deductive Maths Jabong Interview Puzzle

Deductive Maths Jabong Interview Puzzle - 13 January

There is a non vegetarian restaurant which sells chicken in orders of 6, 9 and 20.

Calculate the maximum number of chicken pieces you cannot order from that restaurant ?

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Hard Calendar Puzzle

Hard Calendar Puzzle - 12 January

A contest is held on international level in December 2013. The finale of it is between an American and a British kid. Only name and date have to be mentioned on the paper for checking purpose. But when the checkers check it, they find out that both of them have same names. The papers cannot be told apart in any manner now.

What is the date of competition ?


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Rude Riddle

Rude Riddle - 11 January

A father is locked up in a jail. His wife has gone bankrupt. Their male child has to sell his hotel in order to gain some money. Yet their girl child does not care and is quite happy.

How can someone be so rude ?


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Logic Statement Puzzle

Logic Statement Puzzle - 10 January

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist’s head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive ?


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Math Logic Riddle

Math Logic Riddle - 9 January

A poor villager grows mango in his land and sells them in the town. The town is 1000 miles away from the village. He has rented a truck for transporting the mangoes to the town. The truck can carry 1000 mangoes at one time and this season, he was able to yield 3000 mangoes.

There is a problem. At each mile till the town, there is a check post at which he must give one mango each while travelling towards the town. However, if he is travelling from the town towards his village, he won’t have to give anything.

Tell a way in which the villager can take highest possible number of mangoes to the town.


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Tricky Logic Problem

Tricky Logic Problem - 8 January

Sahir enters the bank he aim to rob and finds Jai standing inside armless. He aims a gun at him and asks him the code for the safe. Jai says, 'The code is different every day but if you hurt me, you will never get to know the code'.

Sahir pins him down and ties him with a rope. He then insert the code of the safe and easily takes all the money with him.

How did he know the code ?


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Clever Girl Riddle

Clever Girl Riddle - 7 January

Shyla was sleeping in her apartment when suddenly a robber broke into her house. He asked her to stay quiet and started looting the cash and jewelry. Suddenly the landline phone started ringing. The robber pointed gun at Shyla and asked her to pick up and talk without giving away the situation.

She picked up the phone and it happened to be her husband. She spoke, “Is it an emergency darling? Do give me a call when your flight lands, I will prepare your favorite food that will help you relieve the stress.” Then she hanged up.

10 minutes after, the police arrives at the scene and catches the robber. How did the police know about the robbery ?


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Statements Riddle

Statements Riddle - 6 January

I travelled to Japan and stopped near a store in order to use the restroom. But the problem was that I could not speak Japanese and thus I was not able to ask which one was for males and which one was for females. I find a person who can understand English but can only speak in Japanese.

I desperately needed to go to the restroom. What two questions did I asked so I could figure with restroom was meant for whom ?
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Laughter Riddle

Laughter Riddle - 5 January

A man found the English Channel while sitting on his sofa.

How did he find it ?
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Who Am I Math Puzzle

Who Am I Math Puzzle - 4 January

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

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Cool Interview Puzzles With Answers

Cool Interview Puzzles With Answers 1 : 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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Cool Interview Puzzles With Answers 2 : Hard Measuring Water Riddle
Difficulty ★★★★★        Popularity ★★★★★


You have two buckets of 11liter and 6liter.
How can you measure exactly 8liter ?
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Cool Interview Puzzles With Answers 3 : 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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Cool Interview Puzzles With Answers 4 : River Riddle
Difficulty ★★★★☆        Popularity ★★★★★


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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Cool Interview Puzzles With Answers 5 : Logic Interview Question
Difficulty ★★★★☆        Popularity ★★★★★


The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its color and put it back into the box, without seeing the color of the other ball.

How many such operations are necessary to correctly label the boxes?
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Cool Interview Puzzles With Answers 6 : Oracle Probability Interview Question
Difficulty ★★★★☆        Popularity ★★★★★


What is the probability of choosing the correct answer at random from the options below.

a) 1/4
b) 1/2
c) 1
d) 1/4
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Cool Interview Puzzles With Answers 7 : 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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Cool Interview Puzzles With Answers 8 : Qualcomm Logic Interview Puzzle
Difficulty ★★★★☆        Popularity ★★★★☆


A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others' bands but can't see his own. Then they are told that there are different colors of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the color of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

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Cool Interview Puzzles With Answers 9 : Knockout Tournament Matches Puzzle
Difficulty ★★★☆☆        Popularity ★★★★☆


A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 15 matches are played in total, how many players participated?
(b) If 50 players took part in the tournament, how many matches were played?
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Cool Interview Puzzles With Answers 10 : Marbles Puzzle
Difficulty ★★☆☆☆        Popularity ★★★★☆


There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box ?
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Funny Brain Twister

Funny Brain Twister - 3 January

A father goes bankrupt. The mother has to sell the restaurant she had in her possession in order to attain some money. But their daughter is quite happy.

How can someone be so heartless and show such boorishness?


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Tricky DE Shaw Interview Puzzle

Tricky DE Shaw Interview Puzzle - 2 January

A simple logical interview question was asked to Rahul by the interviewee:
There is exactly one week between Christmas and New Year. Thus a New Year that occurs right after the Christmas, happens to occur on the same day as Christmas. But in 2030, Christmas will occur on Wednesday and New Year will occur on Tuesday.

How is that possible?

Rahul was able to answer the question. Can you ?


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