1.All possible 3-digit numbers formed from the digits 1,2,3,

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1.All possible 3-digit numbers formed from the digits 1,2,3,6,8,and 9 are written on slips of paper.Repetition of digits within a number is allowed.If one of these slips is drawn at random,what is the probability that it contains the number 262?When the first-drawn slip is replaced and another random drawing of one slip is made,what is the probability that the first digit on this slip is
you are to select one card from a standard deck of playing cards.Find the probability that the card is :
2.an ace of a king
3.an ace or a face card
4.an ace or a red card
5.a club or a queen
6.a club or a red card
7.a club or a face card.

所有可能的3位数字组成的,从数字1,2,3,6,8 ,和9顷写在纸条.重复的数字,一个数字是不允许的.如果这些单据是制订在随机的,什么是概率它所包含的数目262呢?当第一手绘支路是取代另一个随机抽签1支路是,什么是概率第一位数就这个支路是3
你要选择一个卡,可从一个标准的甲板上打牌.找到的概率,该证是：
2 .一个王牌的一景
3.an谘询委员会,或面对卡
4.an王牌或红卡
5 . A俱乐部或女王
6 . A俱乐部或红卡
7.a俱乐部或面对面卡.
这样就会了吧

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