The number N is 5,2H4, where H represents the ten's digit. If N is divisible by 9, what is the value of H?\nOptions:\n(A) 1\n(B) 3\n(C) 5\n(D) 7\n(E) 9
Let's be accurate as possible and think first.
(D)
If the number is divisible by 9, it must also be divisible by 3.

Only 7 yields such a number.

.

Thus, the answer is (D)