gwd13-22

月影无痕

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

ans: b

jhiiool

正面：1/8

反面：1/8

相加：1/4

月影无痕

3x!!![em08]