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Discussion :: Number Series

  1. What will come at the place of question mark ?
    7, 26, 63, 124, 215, 342, ?

    2. A.

     391
    B.

     511
    C.

     481
    D.

     421

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    Answer : Option B

    Explanation :

    The terms are given in a series
    (23 -1) = 7
    (33 -1) = 26
    (43 -1) = 63
    (53 -1) = 124
    (63 -1) = 215
    (73 -1) = 342
    So, the missing term is,
    (83 -1) = 511.

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