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    Question

    Which of the following numbers is divisible by

    11?
    A 5184623 Correct Answer Incorrect Answer
    B 7493158 Correct Answer Incorrect Answer
    C 6342187 Correct Answer Incorrect Answer
    D 7821465 Correct Answer Incorrect Answer

    Solution

    5184623: Difference = (5 + 8 + 6 + 3) тАУ (1 + 4 + 2) = 22 тАУ 7 = 15
    7493158: Difference = (7 + 9 + 1 + 8) тАУ (4 + 3 + 5) = 25 тАУ 12 = 13
    6342187: Difference = (6 + 4 + 1 + 7) тАУ (3 + 2 + 8) = 18 тАУ 13 = 5
    7821465: Difference = (7 + 2 + 4 + 5) тАУ (8 + 1 + 6) = 18 тАУ 15 = 3
    None of them is divisible by 11

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