Number Series Questions for exams
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.
Series Completion Objective Type Questions

Numbers Problems with Solutions

Problem on number aptitude question and answers

Number System Questions in Hindi

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 (2^{3} – 1), (3^{3} – 1), (4^{3} – 1), (5^{3} – 1), (6^{3} – 1), (7^{3} – 1) etc.
So, the next number is (8^{3} – 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 1^{2}, 3 X 2^{2}, 3 X 3^{2}, 3 X 4^{2}, 3 X 5^{2}, 3 X 6^{2}, Missing number= 3 X 7^{2} = 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.
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