Which of the following number is divisible by 24 ?
Options:
A . 35718
B . 63810
C . 537804
D . 3125736
E . None of these
Answer: Option D 24 = 3 × 8, where 3 and 8 co-prime Clearly, 35718 is not divisible by 8, as 718 is not divisible by 8 Similarly, 63810 is not divisible by 8 and 537804 is not divisible by 8 Consider option (D), Sum of digits = (3 + 1 + 2 + 5 + 7 + 3 + 6) = 27, which is divisible by 3 Also, 736 is divisible by 8 ∴ 3125736 is divisible by (3 × 8), i.e., 24
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