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Number Series

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Situation Reaction Test

Direction: In the following number series only one number is wrong. Find out the wrong number.

  1. 1, 3, 10, 21, 64, 129, 356, 777
    1. 21
    2. 129
    3. 10
    4. 356
    5. none of these
Correct Option: D

Pattern is x 2 + 1, x 3 + 1, x 2 + 1, x 3 + 1, ........


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