Number Series Quiz for RBI Assistant Mains / IBPS SO / IPPB Mains 2016-17

1. 126, 254, 318, 350, 366, _

A. 376
B. 374
C. 378
D. 379
E. None of these

Sol. B
The pattern is +128, +64, +32, +16, +8

2. 41, 42, 64, 129, 323.5, _

A. 971.5
B. 972
C. 973.5
D. 975
E. None of these

Sol. A
The pattern is *1 + 1, *1.5 + 1, *2 + 1, *2.5 + 1, 

3. 3, 5, 13, 43, 177, _

A. 892
B. 891
C. 890
D. 889
E. None of these

Sol. B
The pattern is *1 + 2, *2 + 3, *3 + 4,, *4 + 5, *5 + 6

4. 140, 117, 98, 81, 68, 57, _

A. 48
B. 49
C. 50
D. 51
E. None of these

Sol. C
The pattern is -23, -19, -17, -13, -11, -7

5. 7, 6, 10, 27, 104, _

A. 514
B. 515
C. 516
D. 518
E. None of these

Sol. B
The pattern is *1 -1, *2 - 1, *3 - 3, *4 - 4, *5 - 5

6. 13, 7, 6, 14, 52, _

A. 482
B. 476
C. 466
D. 424
E. 460  

Sol. D
13 * 0.5 + 0.5 = 7
7 * 1 – 1 = 6
6 * 2 + 2 = 14

7. 139, 142, 133, 160, 79, _

A. 326
B. 322
C. 331
D. 340
E. 355  

Sol. B
139 + 3 = 142
142 – 9 = 133
133 + 27 = 160

8. 10, 16, 27, 48, 84, _

A. 138
B. 153
C. 166
D. 140
E. 135

Sol. D
16 – 10 = 6
27 – 16 = 11
48 – 27 = 21; 11 – 6 = 5, 21 – 11 = 10..

9. 66, 77, 63, 73, 60, _

A. 66
B. 69
C. 61
D. 64
E. 63

Sol. 66 – 63 = 3
77 – 73 = 4
63 – 60 = 3...

10. 16, 9, 8, 13, 25, _

A. 64.5
B. 59.5
C. 63.5
D. 68.5
E. 61.5

Sol. C
16 * 0.5 + 1 = 9
9 * 1 – 1 = 8
8 * 1.5 + 1 = 13

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