# Aptitude Questions: Number Series Set 30

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 !!!

1. 61 82 124 187 ? 376
A. 238
B. 248
C. 288
D. 271
E. None of these
Explanation :
61 + (1 * 21) = 82
82 + (2 * 21) = 124
124 + (3 * 21) = 187 …..

2. 23 30 46 80 141 ?
A. 238
B. 248
C. 288
D. 271
E. None of these
Explanation :
30 – 23 = 7
46 – 30 = 16
80 – 46 = 34
16 – 7 = 9
34 – 16 = 18….

3. 1338 447 150 51 18
A. 8
B. 3
C. 7
D. 9
E. None of these
Explanation :
1338 / 3 + 1 = 447
447 / 3 + 1 = 150
150 / 3 + 1 = 51 ….

4. 8 10 14.5 22.5 35 53 ?
A. 33.8
B. 34.5
C. 54.25
D. 77.5
E. None of these
Explanation :
10 – 8 = 2
14.5 – 10 = 4.5
22.5 – 14.5 = 8
4.5 – 2 = 2.5
8 – 4.5 = 3.5….

5. 39 52 78 117 169 ?
A. 246
B. 148
C. 188
D. 234
E. None of these
Explanation :
13 * 3 = 39
13 * 4 = 52
13 * 6 = 78
13 * 9 = 117 ….

6. 16 24 ? 210 945 5197.5
A. 30
B. 40
C. 80
D. 90
E. 60
Explanation :
16 * 1.5 = 24
24 * 2.5 = 60

7. 9000 1795 355 68 ? 1.32
A. 13.8
B. 14.8
C. 18.8
D. 19.8
E. None of these
Answer – E. None of these
Explanation :
9000 / 5 – 5 = 1795
1795 / 5 – 4 = 355
355 / 5 – 3 = 68
68 / 5 – 2 = 11.6

8. 17 9 ? 16.5 35 90
A. 10
B. 15
C. 25
D. 30
E. None of these
Explanation :
17 * (1/2) + 0.5 = 9
9 * (1) + 1 = 10

9. 5 3 6 ? 64.75
A. 13.5
B. 14.5
C. 18.5
D. 19.5
E. None of these
Answer – E. None of these
Explanation :
5 * 0.5 + 0.5 = 3
3 * 1.5 + 1.5 = 6
6 * 2.5 + 2.5 = 17.5

10. 6 13 38 ? 532 2675
A. 138
B. 129
C. 123
D. 164
E. None of these
Explanation :
(6 * 1) + 7 = 13
(13 * 2) + 12 = 38
(38 * 3) + 15 = 129
(129 * 4) + 16 = 532
12 – 7 = 5
15 – 12 = 3
16 – 15 = 1
5 – 3 = 2
3 – 2 = 1…

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