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Discussion :: Number Series

  1. Find the missing term: 3, 4, 7, 7, 13, 13, 21, 22, 31, 34, ?

    2. A.

     42
    B.

     43
    C.

     51
    D.

     52

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    Answer : Option B

    Explanation :

    The given sequence is a combination of two series:
    I. 3, 7, 13, 21, 31, ? and
    II. 4, 7, 13, 22, 34
    The pattern in I is + 4, + 6, + 8, + 10,......
    The pattern in II is + 3, + 6, + 9, + 12,..............
    So, missing term = 31 + 12 = 43

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