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    5. Determine the value of 'n' if '87n9812' is always divisible by 9.

    Question

    Determine the value of 'n' if '87n9812' is always divisible

    by 9.
    A 2 Correct Answer Incorrect Answer
    B 5 Correct Answer Incorrect Answer
    C 3 Correct Answer Incorrect Answer
    D 1 Correct Answer Incorrect Answer

    Solution

    A number is divisible by 9 when sum of its digits is divisible by 9.

    Sum of digits = 8 + 7 + n + 9 + 8 + 1 + 2 = (35 + n)

    So, 'n' = 1

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