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1, 2, 6, 15, 31, 56, 91 (a) 31       ...

1, 2, 6, 15, 31, 56, 91 (a) 31          (b) 91           (c) 56          (d) 15

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RS AGGARWAL-ODD MAN OUT AND SERIES-All Questions
  1. 8, 13, 21, 32, 47, 63, 83 (a) 47          (b) 63         (c) 32    ...

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  2. 25, 36, 49, 81, 121, 169, 225 (a) 36         (b) 49        (c) 121 ...

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  3. 1, 2, 6, 15, 31, 56, 91 (a) 31          (b) 91           (c) 56    ...

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  4. 52, 51, 48, 43, 34, 27, 16 (a) 27          (b) 34        (c) 43    ...

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  5. 105, 85, 60, 30, 0, -45, -90 (a) 0          (b) 85         (c) -45 ...

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  6. 4, 6, 8, 9, 10, 11, 12 (a) 10          (b) 11       (c) 12       (d...

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  7. Find the odd one out of the series: 125, 127, 130, 135, 142, 153, 1...

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  8. 16, 36, 64, 81, 100, 144, 190 (a) 81         (b) 100        (c) 190...

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  9. 125, 123, 120, 115, 108, 100, 84 (a) 123         (b) 115        ...

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  10. 3, 10, 21, 36, 55, 70, 105 (a) 105         (b) 70          (c) 3...

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  11. 4, 9, 19, 39, 79, 160, 319 (a) 319         (b) 160         (c) 7...

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  12. 10, 14, 28, 32, 64, 68, 132 (a) 32        (b) 68         (c) 132   ...

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  13. 8, 27, 125, 343, 1331 (a) 1331      (b) 343        (c) 125      ...

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  14. Directions: Insert the missing number: 4, -8, 16, -32, 64, (.......

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  15. 5, 10, 13, 26, 29, 58, 61, (......) (a) 122        (b) 64       ...

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  16. 1, 4, 9, 16, 25, 36, 49, (.....) (a) 54       (b) 56       (c) 164 ...

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  17. 1, 8, 27, 64, 125, 216, (......) (a) 354          (b) 343       ...

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  18. 11, 13, 17, 19, 23, 29, 31, 37, 41, (.....) (a) 43        (b) 47   ...

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  19. 16, 33, 65, 131, 261, (......) (a) 523            (b) 521       ...

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  20. 3, 7, 6, 5, 9, 3, 12, 1, 15, (......) (a) 18             (b) 13    ...

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