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    Question

    If the number 985212m8 is completely divisible by 11,

    then the smallest whole number in place of ‘m’ would be:
    A 5 Correct Answer Incorrect Answer
    C 7 Correct Answer Incorrect Answer
    D 6 Correct Answer Incorrect Answer

    Solution

    We know that: A number is divisible by 11 if difference between the sum of its digits at odd places and the sum of its digits at even places is either 0 or a number divisible by 11. Given number = 985212m8 ​So, (8+2+2+8) - (m+1+5+9) = (5 - m), which must be divisible by 11 ∴ m = 5

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