IBPS Clerk Prelims 2016-17 Quant Quiz-8

1. 45, 43, 83, 245, 975, 4869, _

A. 29207
B. 29107
C. 29217
D. 29307
E. 29407

Sol. *1 - 2, *2 - 3, *3 - 4, *4 - 5, *5 - 6, *6 - 7

2. 26.5, 22.5, 36, 92, 343, 1679, _

A. 10027
B. 10025
C. 10028
D. 10026
E. None of these

Sol. *1 - 2^2, *2 - 3^2, *3 - 4^2, *4 - 5^2, *5 - 6^2, *6 - 7^2

3. 16, 24, 60, 210, 945, _

A. 5197.5
B. 5200
C. 5215.5
D. 5205.5
E. None of these

Sol. *1.5, *2.5, *3.5, *4.5, *5.5

4. 31, 34, 71, 216, 867, _

A. 4338
B. 4348
C. 4368
D. 4388
E. None of these

Sol. *1 + 3, *2 + 3, *3 + 3, *4 + 3, *5 + 3

5. 16, 16, 40, 140, 840, _

A. 8000
B. 7980
C. 7880
D. 7780
E. None of these

Sol. *1, *2.5, *3.5, 6, *9.5

6. 12, 7, 6, 10, 19, _

A. 68.5
B. 58.5
C. 38.5
D. 28.5
E. 48.5

Sol. 12 * 0.5 + 1 = 7
7 * 1 – 1 = 6
6 * 1.5 + 1 = 10
10 * 2 – 1 = 19
19 * 2.5 + 1 = 48.5

7. 18, 20, 25, 42, _ 364

A. 106
B. 136
C. 107
D. 140
E. 104

Sol. 18 + 1² + 1= 20
20 + 2² + 1= 25
25 + 4² + 1= 42
42 + 8² + 1= 107
107 + 16² + 1= 364

8. 48, 49, 96, 291, 1160, _

A. 3835
B. 4825
C. 2815
D. 7865
E. 5805

Sol. 48 * 1 + 1 = 49
49 * 2 – 2 = 96
96 * 3 + 3 = 291
291 * 4 – 4 = 1160
1160 * 5 + 5 = 5805

9. 12, 14, 21, 49, 112, _

A. 262
B. 248
C. 238
D. 264
E. 220

Sol. 12 + 1³ + 1 = 14
14 + 2³ – 1 = 21
21 + 3³ + 1 = 49
49 + 4³ – 1 = 112
112 + 5³ + 1 = 238

10. 2, 48, 392, 1572, 3146, _

A. 6134
B. 4134
C. 3146
D. 3147
E. 8134

Sol. 2*16 + 16 = 48
48*8 + 8 = 392
392*4 + 4 = 1572
1572*2 + 2 = 3146
3146*1 + 1 = 3147 

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