Problem Solving
试题详情
题目：
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?
选项:
A、3/64
B、1/20
C、1/16
D、1/12
E、1/8
答案:
B
