GMAT考题：GMATLA-PS-22

GMAT考题

题库 / GMATLA-PS-22

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?

~$\frac{3}{64}$~

~$\frac{1}{20}$~

~$\frac{1}{16}$~

~$\frac{1}{12}$~

~$\frac{1}{8}$~