Probability and Stats

Question

A drawer contains 11 red socks and 8 blue socks. Suppose you choose 2 socks at random in the dark. Find the following probabilities.

1. A pair of red socks
2. A pair of blue socks
3. One red and one blue
4. Where did the other red sock go?

Answer 1

1) (11/19)*(10/18)

2) (8/19)*(7/18)

3) (11/19)*(8/18)*2

4) Who knows