Number Series
Directions (Q. Nos. 1 to 20) In the following number series what should come in place of question mark (?) in the following number series ?
1. 4, 10, 40, 190, 940, ? 23440
(1) 4690
(2) 2930
(3) 5140
(4) 3680
(5) None of these
2. 7, 4, 5, 9, ?, 52.5, 160.5
(1) 32
(2) 16
(3) 14
(4) 20
(5) None of these
3. 5, 54, 90, 115, 131, 140, ?
(1) 149
(2) 146
(3) 142
(4) 150
(5) None of these
4. 6, 42, ?, 1260, 5040, 15120, 30240
(1) 546
(2) 424
(3) 252
(4) 328
(5) None of these
5. 6, 9, 15, 27, 51, ?
(1) 84
(2) 99
(3) 123
(4) 75
(5) None of these
6. 325, 314, 288, 247, 191 ?
(1) 126
(2) 116
(3) 130
(4) 120
(5) None of these
7. 45, 46, 70, 141, ?, 1061.5
(1) 353
(2) 353.5
(3) 352.5
(4) 352
(5) None of these
8. 620, 632, 608, 644, 596 ?
(1) 536
(2) 556
(3) 656
(4) 646
(5) None of these
9. 15, 25, 40, 65, ? 195
(1) 115
(2) 90
(3) 105
(4) 120
(5) None of these
10. 120, 320, ? 2070, 5195, 13007.5
(1) 800
(2) 920
(3) 850
(4) 900
(5) None of these
11. 2, 8, 26, ? 242
(1) 78
(2) 72
(3) 82
(4) 84
(5) None of these
12. 3, 4, 12, ? 196
(1) 45
(2) 40
(3) 41
(4) 49
(5) None of these
13. 9, 17, ?, 49, 97
(1) 132
(2) 24
(3) 35
(4) 33
(5) None of these
14. 7,13, ?, 49, 97
(1) 27
(2) 25
(3) 23
(4) 29
(5) None of these
15. 5, 3, 6, ?, 64.75
(1) 15
(2) 15.5
(3) 17.5
(4) 17.25
(5) None of these
16. 17, 9, ?, 16.5, 35, 90
(1) 5
(2) 15
(3) 10
(4) 20
(5) None of these
17. 6, 13, 38, ?, 532, 2675
(1) 129
(2) 123
(3) 172
(4) 164
(5) None of these
18. 286, 142, ?, 34, 16, 7
(1) 66
(2) 72
(3) 64
(4) 74
(5) None of these
19. 17, 52, 158, 477, ?, 4310
(1) 1433
(2) 1432
(3) 1435
(4) 1434
(5) None of these
20. 3, 22, ?, 673, 2696, 8093
(1) 133
(2) 155
(3) 156
(4) 134
(5) None of these
Directions (Q. Nos. 21 to 35) In the following number series, one n umber is wrong. Find out the wrong number.
21. 484, 240, 120, 57, 26.5, 11.25, 3.625
(1) 240
(2) 120
(3) 57
(4) 26.5
(5) 11.25
22. 3, 5, 13, 43, 176, 886, 5353
(1) 5
(2) 13
(3) 43
(4) 176
(5) 891
23. 6, 7, 16, 41, 90, 154, 292
(1) 7
(2) 16
(3) 41
(4) 90
(5) 154
24. 5, 7, 16, 57, 244, 1245, 7506
(1) 7
(2) 16
(3) 57
(4) 244
(5) 1245
25. 4, 2.5, 3.5, 6.5, 15.5, 41.5, 126.75
(1) 2.5
(2) 3.5
(3) 6.5
(4) 15.5
(5) 41.25
26. 32, 34, 37, 46, 62, 87, 123
(1) 34
(2) 37
(3) 62
(4) 87
(5) 46
27. 7, 18, 40, 106, 183, 282, 403
(1) 18
(2) 282
(3) 40
(4) 106
(5) 183
28. 850, 843, 829, 808, 788, 745, 703
(1) 843
(2) 829
(3) 808
(4) 788
(5) 745
29. 37, 47, 52, 67, 87, 112, 142
(1) 47
(2) 52
(3) 67
(4) 87
(5) 112
30. 33, 321, 465, 537, 573, 590, 600
(1) 321
(2) 465
(3) 573
(4) 537
(5) 590
31. 3, 7, 16, 35, 72, 153, 312
(1) 7
(2) 153
(3) 35
(4) 72
(5) 16
32. 18, 20, 23, 32, 48, 73, 109
(1) 20
(2) 23
(3) 32
(4) 48
(5) 73
33. 7, 4, 5, 9, 20, 51, 160.5
(1) 4
(2) 5
(3) 9
(4) 20
(5) 51
34. 6, 10, 14, 34, 66, 130, 258
(1) 10
(2) 14
(3) 34
(4) 66
(5) 130
35. 2, 7, 30, 138, 524, 1557, 3102
(1) 7
(2) 30
(3) 138
(4) 534
(5) 1557
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