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Discussion :: Number Series

  1. 3, 15, ?, 63, 99, 143

    2. A.

     27
    B.

     35
    C.

     45
    D.

     56

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    Answer : Option B

    Explanation :

    The terms of the given series are (22 - 1), (42 - 1),....., (82 - 1), (102 - 1), (122 - 1).
    So, missing term = (62 - 1) - (36 - 1) = 35.

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