# Aptitude Questions: Number Series Set 50

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

Directions (1-10): In these questions, a number series is given. Find out the missing number in the series.

1. 14 21 35 57 88 ?
A. 182
B. 129
C. 166
D. 127
E. 180
Answer – B. 129
Explanation :
21 – 14 = 7
35 – 21 = 14
57 – 35 = 22   14 – 7 = 7; 22 – 14 = 8…..

2. 13, 21, 37, 61, ?, 133
A. 96
B. 93
C. 92
D. 97
E. None of these
Answer – B. 93
Explanation :
21 – 13 = 8
37 – 21 = 16
61 – 37 = 24….

3. 9, 10, 18, 57, ?, 1125
A. 164
B. 230
C. 210
D. 224
E. 115
Answer – D. 224
Explanation :
9 * 1 + 1 = 10
10 * 2 – 2 = 18
18 * 3 + 3 = 57

4. 14, 8, 7, 11.5, 22, ?
A. 56
B. 59
C. 53
D. 58
E. 52
Answer – A. 56
Explanation :
14 * 0.5 + 1 = 8
8 * 1 – 1 = 7
7 * 1.5 + 1 = 11.5

5. 13, 14, 26, 108, ? , 13712
A. 836
B. 896
C. 842
D. 856
E. 824
Answer – D. 856
Explanation :
13 * 1 + 1 = 14
14 * 2 – 2 = 26
26 * 4 + 4 = 108
108 * 8 – 8 = 856
856 * 16 + 16= 13712

6. 12, 14, 19, 36, ?, 358
A. 105
B. 104
C. 106
D. 102
E. 101
Answer – E. 101
Explanation :
12 + 1² + 1= 14
14 + 2² + 1= 19
19 + 4² + 1= 36……..

7. 4, ?, 4, 9, 32 155
A. 7
B. 2
C. 3
D. 5
E. 6
Answer – C. 3
Explanation :
4*1 – 1 = 3
3*2 – 2 = 4
4*3 – 3 = 9.

8. 34, 34, 43, 69, 134, ?
A. 164
B. 160
C. 175
D. 258
E. 103
Answer – D. 258
Explanation :
34 + 1³ – 1 = 34
34 + 2³ + 1 = 43
43 + 3³ – 1 = 69

9. 12, 23, 35, 49, ?, 93
A. 67
B. 75
C. 65
D. 23
E. 50
Answer – A. 67
Explanation :
12*2 – 1 = 23
23*2 – 11 = 35
35*2 – 21 = 49

10. 25, 13, 14, ?, 47, 120
A. 19.5
B. 17.5
C. 22.5
D. 23.5
E. 15.5
Answer – C. 22.5
Explanation :
25*0.5 + 0.5 = 13
13*1 + 1 = 14
14*1.5 + 1.5 = 22.5

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