Reasoning - Wrong Number in a Series

Click on the option you think is right and then check by clicking on the Show Answer button. You can change your option as many times as you like.

1. 3, 6, 10, 16, 21, 28

  1. 16
  2. 10
  3. 15
  4. 28

2. 126, 98, 70, 41, 14  

  1. 98
  2. 70
  3. 126
  4. 41

3. 1, 9, 25, 50, 81  

  1. 1
  2. 25
  3. 50
  4. 81

4. 6, 12, 21, 32, 45, 60  

  1. 6
  2. 12
  3. 21
  4. 32

5. 6, 9, 15, 22, 51, 99  

  1. 99
  2. 51
  3. 22
  4. 15

6. 7, 28, 63, 124, 215, 344  

  1. 28
  2. 63
  3. 124
  4. 342

7. 3, 9, 27, 81, 243, 730  

  1. 27
  2. 81
  3. 243
  4. 730

8. 2, 10, 30, 68, 120, 222  

  1. 68
  2. 120
  3. 30
  4. 222

9. 462, 422, 380, 342, 306  

  1. 422
  2. 380
  3. 342
  4. 306

10. 49, 49, 50, 54, 60, 79, 104  

  1. 60
  2. 49
  3. 104
  4. 54

11. 9, 19, 40, 83, 170, 340  

  1. 83
  2. 40
  3. 340
  4. 170

12. 21, 28, 33, 35, 37, 36  

  1. 21
  2. 36
  3. 33
  4. 35

13. 5, 13, 29, 61, 120, 253  

  1. 120
  2. 253
  3. 61
  4. 29


14. 7, 28, 63, 124, 215  

  1. 28
  2. 215
  3. 7
  4. 63

15. 17, 36, 53, 68, 83, 92  

  1. 53
  2. 68
  3. 83
  4. 92

16. 8, 16, 34, 64, 128  

  1. 16
  2. 34
  3. 64
  4. 128

17. 8, 15, 29, 50, 77, 113  

  1. 77
  2. 29
  3. 50
  4. 15

18. 225, 196, 166, 144, 121, 100  

  1. 196
  2. 121
  3. 166
  4. 144

19. 5, 21, 38, 53, 69, 85  

  1. 21
  2. 69
  3. 53
  4. 38

20. 121, 144, 225, 289, 361, 441  

  1. 121
  2. 225
  3. 144
  4. 361

21. 13, 19, 29, 44, 64, 89  

  1. 13
  2. 19
  3. 29
  4. 44

22. 56, 90, 124, 158, 193, 226  

  1. 90
  2. 124
  3. 158
  4. 193