求助：math GWD 13-22

mindfrees

Q22:

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

Answer: B 为什么是B阿

mindfrees

ding !!!!!!!