Number Series Problems With Answers

Number Series Problems With Answers 1 : Hard Number Sequence Riddle
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Find the next number in the sequence

5 12 24 36 ?

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     Answer & Explanation

Solution:
50

sum of consectuve prime numbers
(2+3 , 5+7 , 11+13 , 17+19 , 23+27)

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Number Series Problems With Answers 2 : Pyramid Number Puzzle
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The below is a number puzzle. It should be read left to right, top to bottom.
1
1 1
2 1
1 2 1 1
1 1 1 2 2 1
? ? ? ? ? ?
? ? ? ? ? ? ? ?
Question 1: What is the next two rows of numbers?
Question 2: How was this reached?

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     Answer & Explanation

Solution:
Popular Number Sequence Puzzle
3 1 2 2 1 1
1 3 1 1 2 2 2 1

Line 1 is 'Two ones' (2 1)
Line 2 then becomes 'One two, and one one' (1 2 1 1)
Line 3 therefore is 'One one, one two and two ones' (1 1 1 2 2 1)
Line 4 is 'Three ones, two twos and one one' (3 1 2 2 1 1)
Line 5 is 'One three, one one, two twos and two ones' (1 3 1 1 2 2 1 1)

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Number Series Problems With Answers 3 : Find The Missing Number
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Find the missing number in the image below ?

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     Answer & Explanation

Solution:
6

sum of opposite number is 21

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Number Series Problems With Answers 4 : Hard Number Series Aptitude Riddle
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What is the next number in the series.

15 29 56 108 208 ?

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     Answer & Explanation

Solution:
400

Explanation:
15
2*15-1 => 29
2*29-2 => 56
2*56-4 => 108
2*108-8 => 208
2*208-16 => 400

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Number Series Problems With Answers 5 : Number Series Riddle
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Find The Next Number in this series ?
1, 2, 6, 42, 1806 ?

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     Answer & Explanation

Solution:
3263442

each number is multiplied by the number+1
1x2 = 2
2x3 = 6
6x7 = 42
42x43 = 1806
1806x1807 = 3263442

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Number Series Problems With Answers 6 : Maths Picture Puzzle
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Replace the question mark with the correct number.

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     Answer & Explanation

Solution:
4

6*3 equals 18
7*9 equals 63
6*4 equals 24
7*6 equals 42, ? shud b replcd by 4."

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Number Series Problems With Answers 7 : Number Series
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What is the next number in this series, 1, 11, 21, 1211, 111221 , 312211 ?

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     Answer & Explanation

Solution:
Next in sequence is 13112221.

This series describes each number that came before it:
1 [One]
11 [One One]
21 [Two One(s)]
1211 [One Two and One One(s)]
111221 [One One, One Two, and Two One(s)]
312211 [Three One(s), Two Two(s), and One One]

The next number in the series is:
13112221 [One Three, One One, Two Two(s), Two One(s)]

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Number Series Problems With Answers 8 : What Number Should Replace The Question
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What Number Should Replace The Question Mark In The Circle Below ?

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     Answer & Explanation

Solution:
17

It is the sum of the two digits(9 + 8) in opposite quadrant.

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Number Series Problems With Answers 9 : 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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Number Series Problems With Answers 10 : January Series Puzzle
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Find The Next Number In Series ?
100 365 24 60 ?
*Hint : Timing is everything

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     Answer & Explanation

Solution:
60. 100 years in a century, 365 days in a year, 24 hours in a day, 60 minutes in an hour, & 60 seconds in a minute.