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Discussion :: Number Series

  1. Find the missing number in the series; 1, 2, 3, 10 _.
  2. A.
    89
    B.
    99
    C.
    79
    D.
    69

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    Answer : Option B

    Explanation :

    11 + 1= 2
    22 - 1= 3
    32 + 1= 10
    102 - 1 = 99 (option B)


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