An airline serves a dinner to all the passengers on an airplane. They get their choice of steak or fish. Three steak meals and three fish meals are set aside for the six-member crew. If the meals are distributed to the crew members randomly, what is the probability that both pilots get the fish?
There are $\binom{6}{2} = 15$ ways to choose 2 of the 6 meals for the pilots. There are $\binom{3}{2} = 3$ ways to choose 2 of the 3 fish meals. So the probability is $3/15 = \boxed{\frac{1}{5}}$.