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    Question

    data-sheets-value="{"1":2,"2":"(33^12-1) is divisible by "}" data-sheets-userformat="{"2":769,"3":{"1":0},"11":4,"12":0}">(3312-1) is divisible by
    A 5 Correct Answer Incorrect Answer
    B 7 Correct Answer Incorrect Answer
    C 8 Correct Answer Incorrect Answer
    D 15 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Remember that an-bn is always divisible by a-b .
    Hence (3312 -1) means (3312 -112) will be divisible by (33-1) or 32
    Hence, by options, we can say that (3312 -1) is divisible by 8.

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