Student: 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?
Options:
(A) 1/8
(B) 1/4
(C) 1/16
(D) 1/32
(E) 1/2.
Another student: Let's say, hmmm...

user
Must be twice on heads and twice on tails
1/2*1/2*1/2*1/2 = 1/16 Final answer: (C).
assistant