Question
Which of the following numbers is divisible by 24 ?
Answer: Option D
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24 = 3 x 8, where 3 and 8 are so-primes.
Clearly, 35718 is not divisible by 8, as 718 is not divisible by 8
Similarly, 63810 is not divisible by 8 and 537804 is no divisible by 8.
Consider part (d)
Sum of digits = (3 + 1 + 2 + 5 + 7 + 3 + 6) = 27, which is divisible by 3.
Also , 736 is divisible by 8.
`therefore` 3125736 is divisible by (3 x 8), i.e., 24.
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