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Discussion :: Numbers

  1. If the number 653 xy is divisible by 90, then (x + y) = ?

  2. A.

    2

    B.

    3

    C.

    4

    D.

    6

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    Answer : Option C

    Explanation :

    90 = 10 x 9

    Clearly, 653xy is divisible by 10, so y = 0

    Now, 653x0 is divisible by 9.

    So, (6 + 5 + 3 + x + 0) = (14 + x) is divisible by 9. So, x = 4.

    Hence, (x + y) = (4 + 0) = 4.


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