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# Number Series Questions for exams

Last year 135.2K Views All most in all the entrance tests, as well as interviews Number Series Questions, are asked to evaluate IQ. Solve these Number Series problems and practice for competitive exams. People who love mathematics definitely enjoy solving Number Series Questions and answers. This section is devoted to all such enthusiast brain buddies.

Let's have some important Number Series Questions and Answers to solve yourself for better practice of competitive exams. As well as of these questions, you should know Number Series Problems with Solutions for saving time in the competitive Exams.

## Number Series Questions and Answers logical reasoning problems:

1)  2, 12, 36, 80, 150, ?

A. 250
B. 252
C. 200
D. 270

ans. B

Explanation:
A unique pattern has been made into use in this series.
All numbers are (n^3 + n^2) where n is 1, 2, 3 and so on.

2) 6, 14, 36, 98, ?

A. 276
B. 275
C. 220
D. 274

ans. A

Explanation:
6 = 1^1 + 2^1 + 3^1
14 = 1^2 + 2^2 + 3^2
36 = 1^3 + 2^3 + 3^3
98 = 1^4 + 2^4 + 3^4

Thus the next number will be
1^5 + 2^5 + 3^5 = 276

3) 5, 16, 49, 104, ?

A. 171
B. 191
C. 181
D. 161

ans. C

Explanation:
+11 =16
+33 =49
+55 =104
+77 =181

4) 8, 7, 11, 12, 14, 17, 17, 22, ?

A. 27
B. 20
C. 24
D. 22

ans. B

Explanation:
There are two series (8, 11, 14, 17, 20) and (7, 12, 17, 22) increasing by 3 and 5 respectively.

5) 2, 6, 12, 20, 30, 42, 56, ?

A. 61
B. 64
C. 70
D. 72

ans. D

Explanation:
The pattern is 1 x 2, 2 x 3, 3 x 4, 4 x 5, 5 x 6, 6 x 7, 7 x 8.
So, the next number is 8 x 9 = 72.

6) 4, -8, 16, -32, 64, ?

A. 128
B. -128
C. 192
D. -192

ans. B

Explanation:
Each number is the proceeding number multiplied by -2.
So, the required number is -128.

7) 7, 26, 63, 124, 215, 342, ?

A. 481
B. 511
C. 391
B. 421

ans. B

Explanation:
Numbers are (23 – 1), (33 – 1), (43 – 1), (53 – 1), (63 – 1), (73 – 1) etc.
So, the next number is (83 – 1) = (512 – 1) = 511.

8) 3, 12, 27, 48, 75, 108, ?

A. 147
B. 183
C. 162
D. 192

ans. A

Explanation:
The numbers are 3 x 12, 3 X 22, 3 X 32, 3 X 42, 3 X 52, 3 X 62, Missing number= 3 X 72 = 147

9) 20, 19, 17, ?, 10, 5

A. 14
B. 15
C. 13
D. 11

ans. A

Explanation:
The Pattern is – 1, – 2,…
Missing number = 17 – 3 = 14.

10) 1, 6, 13, 22, 33, ?

A. 44
B. 45
C. 46
D. 47

Ans .  C

The pattern is + 5, + 7, + 9, + 11,...

.'. Missing number = 33 + 13 = 46.

Ask me in the comment section, if you face any problem while solving number series reasoning questions. Visit next page for more number series problems.