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Discussion :: Number Series

  1. 2, 1, 2, 4, 4, 5, 6, 7, 8, 8, 10, 11, ?

  2. A.

     9

    B.

     10

    C.

     11

    D.

     12

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    Answer : Option B

    Explanation :

    The given sequence is a combination of three series :

    I. 1st, 4th, 7th, 10th, 13th terms i.e. 2, 4, 6, 8, ?
    II. 2nd, 5th, 8th, 11th terms i.e. 1, 4, 7, 10
    III. 3rd, 6th, 9th, 12th terms i.e. 2, 5, 8, 11

    Clearly, I consists of consecutive even numbers. So, the missing term is 10.


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