When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 4 times, what is the probability that it will land twice on heads and twice tails?\nOptions:\n(A) 1/8\n(B) 1/4\n(C) 1/16\n(D) 1/32\n(E) 1/2
Stream of thoughts:
(C)
Must be twice on heads and twice on tails\n1/2*1/2*1/2*1/2 = 1/16.

So, the answer is (C)