标题: math question [打印本页] 作者: az3657755 时间: 2007-5-9 05:37 标题: math question
Four cartons of 12 eggs have 2, 1, 1, and 3 cracked eggs respectively. A carton is chosen at random and then 2 eggs are selected at random from the chosen carton. Question: Find the probability that at least 1 cracked egg is selected.