不用写出过程,只要写一下每一题的答案和大概怎么做的就行了,感激不尽
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不用写出过程,只要写一下每一题的答案和大概怎么做的就行了,感激不尽
10.A box contains 6 white marbles,7 red marbles,and 8 blue marbles.
(a) If you choose 3 marbles at random from the box,what is the probability that they are
all the same color?
(b) Suppose instead you choose the 3 marbles one at a time,and each time you choose
a marble,you return it to the box before drawing the next marble.What is the
probability that all three marbles are the same color?
11.If you are dealt 5 cards from a standard 52-card deck,what is the probability that you will
get at least one card of each suit?
12.Suppose 10 couples attend an event,and all 20 people enter a raffle.Four of the 20 people
are selected at random to win $10 in the raffle.What is the probability that at least one
couple takes home $20,which will occur if both the husband and wife win the raffle?
13.Suppose that 10 people attend a gathering.
(a) Suppose the 10 people consist of 5 couples (each consisting of a husband and a wife).
If the men and women are paired up at random,with each pair consisting of a man
and a woman,what is the probability that everyone gets paired with his or her spouse?
(b) Suppose the 10 people consist of 5 sets of twin sisters.If the 10 people are then
grouped into 5 pairs at random,what is the probability that everyone gets paired with
her twin?
10.A box contains 6 white marbles,7 red marbles,and 8 blue marbles.
(a) If you choose 3 marbles at random from the box,what is the probability that they are
all the same color?
(b) Suppose instead you choose the 3 marbles one at a time,and each time you choose
a marble,you return it to the box before drawing the next marble.What is the
probability that all three marbles are the same color?
11.If you are dealt 5 cards from a standard 52-card deck,what is the probability that you will
get at least one card of each suit?
12.Suppose 10 couples attend an event,and all 20 people enter a raffle.Four of the 20 people
are selected at random to win $10 in the raffle.What is the probability that at least one
couple takes home $20,which will occur if both the husband and wife win the raffle?
13.Suppose that 10 people attend a gathering.
(a) Suppose the 10 people consist of 5 couples (each consisting of a husband and a wife).
If the men and women are paired up at random,with each pair consisting of a man
and a woman,what is the probability that everyone gets paired with his or her spouse?
(b) Suppose the 10 people consist of 5 sets of twin sisters.If the 10 people are then
grouped into 5 pairs at random,what is the probability that everyone gets paired with
her twin?
10(a)(c(3,6)+c(3,7)+c(3,8))/c(3/21);
(b) (6/21)*(6/21)*(6/21)+(7/21)*(7/21)*(7/21)+(8/21)*(8/21)*(8/21);
11.c(1,13)*c(1,13)*c(1,13)*c(1,13)*c(1,48)/c(5,52);
12.c(1,10)*c(2,2)*c(2,18)/c(4,20);
13.(a)A(5,5)*A(5,5)*A(2,2)/A(10,10);
(b)A(5,5)*A(2,2)/A(10,10);
(b) (6/21)*(6/21)*(6/21)+(7/21)*(7/21)*(7/21)+(8/21)*(8/21)*(8/21);
11.c(1,13)*c(1,13)*c(1,13)*c(1,13)*c(1,48)/c(5,52);
12.c(1,10)*c(2,2)*c(2,18)/c(4,20);
13.(a)A(5,5)*A(5,5)*A(2,2)/A(10,10);
(b)A(5,5)*A(2,2)/A(10,10);
不用写出过程,只要写一下每一题的答案和大概怎么做的就行了,感激不尽
麻烦把下面的解答题做一下,我不懂,你只要写过程就行了
高一物理在线等只要求写出公式和解题过程及答案不用讲怎么做谢谢
只要给出答案就行了 天空和选择 还有计算题的答案就可以了 后面的证明题 不用的
计划生育为题目的文章帮我大概的写一下整理下思路分为哪几点可写的高一就要写这种东西诶~只要大概就行了
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几道数学题,(直接写出答案就可以了)不用写过程
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英语翻译很简单的句子啦,就是用虚拟语气,描述一下理想中的房子.说“不用太大,只要觉得温馨就可以了”大概就是这个意思
做寿司的材料只要材料就行了,不用说明过程,越多越好,但是要在超市能买得到的.
第一问我已经写出来了,只要第二问的过程和答案.
C或C++写的真值表的算法 只要个大概方法就行了