THIS MONTH'S QUIZ
The sockdrawer in my bedroom contains 8 black socks, 6 grey ones and 2 brown ones. Just as I am about to select a pair, the light fails and the room is plunged into darkness.
1. If I pick out two socks at random, find the probability that they form a matching pair.
2. If I pick out three socks at random and take them into a lighted room, find the probability that they include a matching pair.
3. If I pick out four socks at random and take them into a lighted room, find the probability that they include at least one matching pair.
