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Discussion :: Number Series

  1. 3, 7, 15, ?, 63, 127

    2. A.

     30
    B.

     31
    C.

     47
    D.

     52

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    Answer : Option B

    Explanation :

    Each number in the series is one more than twice the preceding number.
    So, missing term = (15 x 2) + 1 = 31.

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