Q37:
A jar contains 16 marbles, of which 4 are red, 3 are blue, and the rest are yellow. If 2
marbles are to be selected at random from the jar, one at a time without being replaced,
what is the probability that the first marble selected will be red and the second marble
selected will be blue?
A. 3/64
B. 1/20
C. 1/16
D. 1/12
E. 1/8
唉 已经忘了这种基本的概率题
请教一下做法 谢谢!! | 
