posted by Amy on .
suppos a drawer contains 6 black socks, 4 brown socks, and 2 green socks. suppose one sock gets pulled out of the drawer and that is equally likely that any one of the socks is drawn. what is the probability that the sock is either balck or green.
the sock is not black.
Are these two different questions?
anyway there are 12 socks
probability of black = 6/12
probability of green = 2/12
probability black or green = 8/12 =2/3
probability that the sock is not black = 1 - probability of black = 1 -6/12 = 6/12 = 0.5