You randomly choose one sock, put it on your left foot, then choose another.

White socks: 4 pairs

Black socks: 4 pairs

Green socks: 2 pairs

Blue socks: 3 pairs

Yellow socks: 3 pairs

a.) Find the probability of the compound event of choosing a black sock and then abluesock. (Enter your probability as a fraction.)

b.) Find the probability of the compound event of choosing a pair ofyellowsocks. (Enter your probability as a fraction.)