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  1. How many of the following numbers are divisible by 3 but not by 9 ?
    2133, 2343, 3474, 4131, 5286, 5340, 6336, 7347, 8115, 9276

    2. A.

    5
    B.

    6
    C.

    7
    D.

    None of these

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    Answer : Option B

    Explanation :

    Marking (/) those which are are divisible by 3 by not by 9 and the others by (X), by taking the sum of digits, we get:s

    2133  9 (X)

    2343  12 (/)

    3474  18 (X)

    4131  9 (X)

    5286  21 (/)

    5340  12 (/)

    6336  18 (X)

    7347  21 (/)

    8115  15 (/)

    9276  24 (/)

    Required number of numbers = 6.

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