# Aptitude Questions: Number Series Set 28

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 !!!

Bank PO Level Questions :-

1. 35 118 280 600 ? 2504 5036
A. 1364
B. 1236
C. 1362
D. 1361
E. None of these
Explanation :
118 – 35 = 83
280 – 118 = 162
=>162 – 83 = 79
280 – 118 = 162
600 – 280 = 320
=>320 – 162 = 158

2. 18 119 708 ? 14136 42405
A. 3434
B. 3535
C. 3636
D. 3737
E. None of these
Explanation :
18*7 -7 = 119
119*6 -6 = 708
708*5 -5 = 3535

3. 5 7.5 11.25 17.5 ? 50
A. 28.75
B. 26.50
C. 27.50
D. 28.25
E. None of these
Explanation :
7.5 – 5 = 2.5
11.25 – 7.5 = 3.75
=> 3.75 – 2.5 = 1.25
11.25 – 7.5 = 3.75
17.5 – 11.25 = 6.25
=> 6.25 – 3.75 = 2.5

4. 264 262 271 243 ?
A. 302
B. 304
C. 306
D. 308
E. None of these
Explanation :
264 – 1³ + 1 = 262
262 + 2³ + 1 = 271
271 – 3³ + 1 = 243

5. 1.5 2.5 7 24 100 ?
A. 500
B. 504
C. 505
D. 503
E. None of these
Explanation :
1.5 * 1 + 1 = 2.5
2.5 * 2 + 2 = 7
7 * 3 + 3 = 24

6. 15 29 47 73 115 ?
A. 176
B. 189
C. 173
D. 178
E. None of these
Explanation :
15*2 – 1 = 29
29*2 – 11 = 47
47*2 – 21 = 73

7. ? 21 9 6 6 5
A. 58
B. 32
C. 60
D. 22
E. None of these
Explanation :
21 – 9 = 12
9 – 6 = 3
=> 12 – 3 = 9
9 – 6 = 3
6 – 6 = 0
=> 3 – 0 = 3

8. 9 20 63 256 ?
A. 789
B. 816
C. 879
D. 980
E. None of these
Answer – E. None of these
Explanation :
9 * 2 + 2 = 20
20 * 3 + 3 = 63
63 * 4 + 4 = 256
256 * 5 + 5 = 1285

9. 1 2 6 21 88 ? 2676 .
A. 450
B. 455
C. 440
D. 445
E. None of these
Explanation :
1*1+1 = 2
2*2+2 = 6
6*3+3 = 21
21*4+4 = 88

10. 2 12 36 ? 150
A. 70
B. 75
C. 60
D. 65
E. None of these
Answer – E. None of these
Explanation :
Ans : 80
1³ + 1², 2³ + 2², 3³ + 3², 4³ + 4²….

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