大家帮我解答一下用英语出的数学题 谢啦:)
这几道题都是关于数学哪方面知识的?1.Anurncontainssixred,threewhite,andtwobluemarbles.Inhowmanywayscant...
这几道题都是关于数学哪方面知识的?
1.An urn contains six red,three white,and two blue marbles.In how many ways can three marbles be selected so that at least one is blue?
2.A man has a penny,a nickel,a dime,a quarter,and a half-dollar coin in his pocket.The man reaches into his pocket and selects three coins.How many different sums can he three coins form?
3.Five cards are drawn from a standard deck of 52 cards.How many different hands of five cards contain four of a kind(four cards of the same rank plus one additional card)?
4.An ice cream store has 31 flavors to select from.A customer wants to select two different flavors.How many ways can the customer make this selection?
5.A set contains five elements.How many subets can be formed from the set? 展开
1.An urn contains six red,three white,and two blue marbles.In how many ways can three marbles be selected so that at least one is blue?
2.A man has a penny,a nickel,a dime,a quarter,and a half-dollar coin in his pocket.The man reaches into his pocket and selects three coins.How many different sums can he three coins form?
3.Five cards are drawn from a standard deck of 52 cards.How many different hands of five cards contain four of a kind(four cards of the same rank plus one additional card)?
4.An ice cream store has 31 flavors to select from.A customer wants to select two different flavors.How many ways can the customer make this selection?
5.A set contains five elements.How many subets can be formed from the set? 展开
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1、一个缸里装有六个红色的,三个白色的和两个蓝色的玻璃球,问共有多少种方式可以每次选择3个玻璃球且每次至少有一个是蓝色的,?
2、有个人的口袋里装有一个便士(美国或加拿大的一分),一个镍币(美国或加拿大的镍币,伍分),a quarter(不知道怎么翻译,值二十五美分),a half-dollar coin (值0.5美元的硬币)。问若这个人每次从口袋里取出三枚硬币,共有几种方式。
3、从一副52张的扑克牌中取出5张.问有多少种不同的处理方法可以使所取出的5张牌中有4张是同样大小的?
4、有一个冰淇淋店,里面有31种不同的口味可供选择,有一个顾客想选两个不同的口味。问这个顾客有多少钟选择?
5、有一个集合包含5个元素,问在这个集合中将会有多少的个子集?
如果我翻译的没错的话,这是关于排列组合的问题。
2、有个人的口袋里装有一个便士(美国或加拿大的一分),一个镍币(美国或加拿大的镍币,伍分),a quarter(不知道怎么翻译,值二十五美分),a half-dollar coin (值0.5美元的硬币)。问若这个人每次从口袋里取出三枚硬币,共有几种方式。
3、从一副52张的扑克牌中取出5张.问有多少种不同的处理方法可以使所取出的5张牌中有4张是同样大小的?
4、有一个冰淇淋店,里面有31种不同的口味可供选择,有一个顾客想选两个不同的口味。问这个顾客有多少钟选择?
5、有一个集合包含5个元素,问在这个集合中将会有多少的个子集?
如果我翻译的没错的话,这是关于排列组合的问题。
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