when jack wakes up everyday, he picks a sock. there is 1 blue sock, 2 white socks, 3 red socks, and 4 yellow socks. because jack is biased in his pick, the probability of him picking out a blue sock is 4 times as likely as a yellow sock, 3 times as likely as a red sock, and 2 times as likely as a white sock. what is the probability of him picking a yellow or white sock?