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In each of the following questions three...

In each of the following questions three of the given four are alike in a certain way and form a group .Which is the one that does not belong to that group in the following questions ?

A

257

B

143

C

195

D

224

Text Solution

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The correct Answer is:
A
Except 257 , all others are in `X^(2)-1` pattern i.e.,
`143=12^(2)-1,195=14^(2)-1,224=15^(2)-1,168=13^(2)-1`
But `=16^(2)+1`.
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LUCENT PUBLICATION-CLASSIFICATION OF NUMERALS : ODD MAN OUT -Exercise -1
  1. In each of the following questions four of the given five are alike in...

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  2. In each of the following questions four of the given five are alike in...

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  3. In each of the following questions three of the given four are alike i...

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  5. In each of the following questions four of the given five are alike in...

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  6. In each of the following questions three of the given four are alike i...

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  7. In each of the following questions four of the given five are alike in...

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  8. In each of the following questions three of the given four are alike i...

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  9. In each of the following questions three of the given four are alike i...

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  10. In each of the following questions four of the given five are alike in...

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  11. In each of the following questions four of the given five are alike in...

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  12. In each of the following questions four of the given five are alike in...

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  13. In each of the following questions four of the given five are alike in...

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  14. In each of the following questions four of the given five are alike in...

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  15. In each of the following questions four of the given five are alike in...

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  16. In each of the following questions four of the given five are alike in...

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  17. In each of the following questions four of the given five are alike in...

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  18. In each of the following questions four of the given five are alike in...

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  19. In each of the following questions four of the given five are alike in...

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  20. In each of the following questions three of the given four are alike i...

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