SAT2 概率题 Three cards are drawn from an ordinary deck of 52 cards.Each card is replaced in the deck before the next card is drawn.What is the probability that at least one of the cards will be a spade?求教思路和过程
问题描述：
SAT2 概率题
Three cards are drawn from an ordinary deck of 52 cards.Each card is replaced in the deck before the next card is drawn.What is the probability that at least one of the cards will be a spade?
求教思路和过程
答