GWD-9,23. When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?A. 1/8 B.1/4 C.1/3 D. 3/8 E. 1/2 我选的是A.1/8。 这个不是独立重复试验么,投币3次,每次概率1/2,3次面都相同的概率么。 C(3 3) (1/2)^3 (1/2)^0, 算出来就是1/8。 这个独立重复试验我不是很熟悉,请教各位了~