SEQUENCE

Find the missing number

1.     21, 22, 24, 27, 31, 36, ......
(a) 41       (b)72      (c)42       (d)44

2.     11, 12, 14, 15, 17, 18, 20, 21, .....
(a)22        (b)23      (c)24      (d)25

3.     400, 441,484, 529, ........
(a)468      (b)576     (c)300     (d)560

4.     18, 10, 6, 4, .......
(a)3         (b)2        (c)-4       (d) 0

5.     3, 7, 15, 31, ........
  (a)60         (b)63         (c)64         (d)70

6.     5, 11, 23, ............., 95
  (a)40         (b)51         (c)60         (d)47

7.     6, 13, 21, 30, 40, 51, 63, .........
  (a)70         (b)72         (c)76         (d)74

8.     14, 41, 45, 54, 67, ......
  (a)55         (b)54         (c)76         (d)57

9.     2, 4, 8, 16, .......
  (a)8           (b)32         (c)4           (d)12

10. 21, 441, 25, .......
  (a)50         (b)52         (c)625       (d)400

11. 2, 6, 12, 36, 72, ...........
  (a)216       (b)214       (c)146       (d)144

12. 24, 27, 32, 36, 40, 45, ........, .........
  (a)48,45   (b)48,54   (c)50,56   (d)52,54

13. 3, 4, 9, 16, 27, 64, 81, 256, ........, ........
  (a)146,324 (b)162,512 (c)337,181 (d)243,1024

14. 146, 99, 126, 79, 106, 59, ........, ..........
  (a)96, 49  (b)99,56   (c)86,39   (d)116,49

15. 2, 4, 7, 11, ........, ........
  (a)15, 19 (b)16,20    (c)19,20   (d)16,22

16. 2, 3, 6, 13, 28, ............
  (a)59         (b)84         (c)63         (d)71

17. 2, 5, 1, 6, 0, ........
  (a)6           (b)7           (c)2           (d)8

18. 3, 7, 10, 17, 27, 44, ...............
  (a)54         (b)88         (c)71         (d)100

19. 5, 9, 4, 11, 7, 17, 10, ........., 6
  (a)5           (b)20         (c)18         (d)16

20. 2, 5, 11, 23, 47, ..........
  (a)49         (b)52         (c)95         (d)106

21. 8, 13, 23, 28, 38, .........
  (a)48         (b)43         (c)53         (d)58

22. 1, -1, -3, -5, ............
  (a)7           (b)-7          (c)-6          (d)-5

23. 8, 16, 24, 24, ...........
  (a)32         (b)28         (c)12         (d)20

24. 29, 31, 37, 41, 43, .........
  (a)45         (b)53         (c)47         (d)59

25. 0, 7, 26, 63, 124, ............
  (a)215       (b)225       (c)250       (d)256

26. 65, 63, 60, 56, 51, ........
  (a)44         (b)45         (c)46         (d)47

27. 3, 5, 4, 7, 5, 9, ............
  (a)6           (b)8           (c)9           (d)11

28. 11, 13, 17, 19, ........, 25, 29
  (a)23         (b)21         (c)24         (d)22

29. 720, 360, ..........., 30, 6, 1
  (a)60         (b)240       (c)120       (d)40

30. 10, 16, 12, 18, 14, 20, ...........
  (a)24         (b)16         (c)14         (d)12

31. 9, 12,15, 19, 23, 26, 29, 33, ..........
(a) 34         (b) 36         (c)37          (d)38   

32. 2, 11, 23, 3, 13, 29, 5, 17,31, 7, 19..............
   (a)39        (b)37         (c)19         (d)50

33. 10, 10, 11, 13, 16, 20, 25, 31, ...............
  (a)38         (b)37         (c)36         (d)32

34. 20, 18, 22, 20, 24, 22, 26, .............
  (a)24         (b)26         (c)28         (d)30

35. 60, 64, 32, 36, 18, 22, .........
  (a)20         (b)12         (c)11         (d)24

36. 7, 5, 10, 7, 21, 17, 68, .........
  (a)63         (b)31         (c)66         (d)70

37. 1, 1, 8, .............., 27, 9,  64, ............
  (a)4           (b)6           (c)9           (d)16

38. 2/3, 4/7, x/y, 11/21, 16/31
  (a)6/11     (b)5/18     (c)7/13     (d)5/9

39. 18, 31, 46, 63, 82. ...............
  (a)103       (b)108       (c)95         (d)97

40. 27, 64, 125, 216, 343, ............
  (a)512       (b)422       (c)900       (d)548

Answers