Question

    Which of the following numbers is divisible by 24? 

    A 49512 Correct Answer Incorrect Answer
    B 52668 Correct Answer Incorrect Answer
    C 64760 Correct Answer Incorrect Answer
    D 26968 Correct Answer Incorrect Answer

    Solution

    A number is divisible by 24 if it is divisible by both 3 and 8. Divisibility by 3: A number is divisible by 3 if the sum of its digits is divisible by 3. Divisibility by 8: A number is divisible by 8 if the last three digits form a number divisible by 8. (b) 49512 A sum of digits= 4+9+5+1+2= 21 (divisible by 3) Last three digits= 512 (divisible by 8)

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