Question

    Determine the maximum digit that can replace 'k' in

    'k75381' so that it becomes divisible by 3.
    A 7 Correct Answer Incorrect Answer
    B 9 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 1 Correct Answer Incorrect Answer

    Solution

    ATQ,

    A number is divisible by 3 when the sum of its digits is divisible by 3.

    Sum of digits of 'k75381' = k + 7 + 5 + 3 + 8 + 1 = (k + 24)

    (k + 24) is divisible by 3 when k = 0, 3, 6 or 9

    Therefore, maximum value of 'k' = 9

    Practice Next

    Relevant for Exams: