What is the greatest positive integer x such that 2^x is a factor of 8^10?\nOptions:\n(A) 5\n(B) 9\n(C) 10\n(D) 20\n(E) 30 Let's think first. Stream of consciousness:
User
8^10 = (2^3)^10 = 2^30
So, the answer is (E).
Assistant