posted by Zion
Without looking, George pulls socks from a drawer containing 2 white socks, 3 black socks, and 5 yellow socks. With each pull, a sock is removed from the drawer and is not replaced. Find the probability of drawing a yellow, black, and white sock in that order?
do we had 5/10 +3/10+2/10?
no, you cant add them
notice you would have a probability equal to 1, which means the event you want will always happen.
prob(yellow, black, then white)
notice that each time a sock is pulled there is one less to choose from, hence the decreasing denominators