Which of the following numbers is completely divisible by 24?

ATQ, A number is divisible by 24 if it is divisible by both 3 and 8. (A) 3,14,512: Last three digits are 512 (divisible by 8), but sum of digits = 3 + 1 + 4 + 5 + 1 + 2 = 16, which is not divisible by 3. (B) 4,25,832: Last three digits are 832 (divisible by 8), and sum of digits = 4 + 2 + 5 + 8 + 3 + 2 = 24, which is divisible by 3. (C) 5,36,716: Last three digits are 716, which is not divisible by 8. (D) 6,18,424: Last three digits are 424 (divisible by 8), but sum of digits = 6 + 1 + 8 + 4 + 2 + 4 = 25, which is not divisible by 3. Hence, the correct answer is B.