# How to Approach Number Series Questions ? Logical Reasoning

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## Number Series Model Questions

Directions: In each of the following questions, a number series is given with one term with (?) marks. Find out the missing term and replace it with correct answers given below the series.

1. 206, 309, 412, ?, 618, 721
(a) 751
(b) 749
(c) 515
(d) 514

2. 1, 8, 81, 16, ? 1296
(a) 125
(b) 369
(c) 325
(d) 89

3. 219, 211, 204, 198, ?m 189
(a) 189
(b) 192
(c) 193
(d) 196

4. 198, 194, 185, 169, ?
(a) 150
(b) 144
(c) 125
(d) 169

5. 3, 6, 18, 72, ?, 2160
(a) 144
(b) 216
(c) 288
(d) 360

6. 2, 7, 27, 107, 427, ?
(a) 1707
(b) 158
(c) 2587
(d) 2547

7. 100, 50, 52, 26, 28, ?, 16, 8
(a) 14
(b) 30
(c) 32
(d) 38

8. 8, 24, 16, ?, 7, 14, 6, 18, 12, 5, 5, 10
(a) 7
(b) 8
(c) 9
(d) 10

9. 12, 8, 4, 8, 4, 12, 4, 12, 8, 100, 44, ?
(a) 80
(b) 56
(c) 48
(d) 36

10. 5, 2, 7, 9, 16, 25, ?
(a) 41
(b) 56
(c) 96
(d) 58

11. 10, 18, 28, 40, ?
(a) 58
(b) 46
(c) 52
(d) 54

12. 5, 9, 17, 33, 65, ?
(a) 129
(b) 56
(c) 369
(d) 5

13. 6, 12, 36, 144, 720, 4320, ?
(a) 30420
(b) 30243
(c) 31240
(d) 32240

14. 10, 14, 26, 42, 70, ?
(a) 80
(b) 92
(c) 90
(d) 114

15. 8, 15, 28, 53, ?
(a) 106
(b) 100
(c) 108
(d) 102

16. 2, 8, 16, 128, ?
(a) 125
(b) 2658
(c) 2048
(d) 259

17. 5, 9, 13, 17, ?, 25
(a) 27
(b) 23
(c) 21
(d) 19

18. 8, 1, 64, 27, ?, 125
(a) 216
(b) 220
(c) 365
(d) 98

19. 14, 27, 52, 101, 198, ?
(a) 381
(b) 395
(c) 391
(d) 364

20. 3, 10, 101, ?
(a) 10201
(b) 10202
(c) 10258
(d) 15963