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Discussion :: Number Series

  1. 8, 9, 8, 7, 10, 9, 6, 11, 10, ?, 12

    2. A.

     5
    B.

     7
    C.

     8
    D.

     11

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    Answer : Option A

    Explanation :

    The given sequence is a combination of three series :
    I. 1st, 4th, 7th, 10th terms i.e. 8, 7, 6, ?
    II. 2nd, 5th, 8th, 11th terms i.e. 9, 10, 11, 12
    III. 3rd, 6th, 9th terms i.e. 8, 9, 10 The pattern in I is - 1.
    So, missing term = 6 - 1 = 5.

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