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Discussion :: Number Series

  1. 80, 10, 70, 15, 60, ... What number should come next?

    2. A.

     20
    B.

     25
    C.

     30
    D.

     50

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    Answer : Option A

    Explanation :

    This is an alternating addition and subtraction series. In the first pattern, 10 is subtracted from each number to arrive at the next. In the second, 5 is added to each number to arrive at the next.

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