Give five different books to four students. The probability of each student having at least one book is A. B. C. D.
The probability of each student having at least one book can be calculated using the complementation principle in computational mathematics: The complement of students with one book (i.e., the combination of students without books) contains all four students, so the probability of students with one book is: 1/4 Similarly, the complement of a student without a book also contains all four students, so the probability of a student without a book is: 3/4 Therefore, the probability of each student having at least one book is: 1 - 3/4 = 1/4 Therefore, he chose option B.
14 students went to the teacher's house to borrow books. There were four kinds of books in the teacher's study: A, B, C and D. Each student could borrow at most two books of different kinds.
If 14 students go to the teacher's house to borrow books, the teacher's study has four types of books: A, B, C, and D. Each student can borrow at most two books of different types. How many books can you borrow at least? Since each student can borrow at most two books of different categories, if all 14 students want to borrow books of the same category, the number of books they need to borrow must be the power of 2, which is: 14 × 16 × 25 × 31 × 38 × × 2^127 This was a very large number that required a special algorithm to calculate. However, if the books that 14 students want to borrow all belong to different categories, then the minimum number of books that need to be borrowed is the power of 2 minus 1, which is: 2^0 + 2^1 + 2^2 + + 2^127 - 1 Using mathematical induction, we can prove that this expression is a power of two, which is: 2^0 + 2^1 + 2^2 + + 2^127 = 2^128 Therefore, if all 14 students wanted to borrow books from different categories, they would need to borrow at least 2128 books.
Using C voice programming to achieve: Xiao Ming has five new books, to borrow A,B,C , three students, each can only borrow one, then how many ways to borrow?
This problem can be solved in a recursion. Suppose there are $n$books to lend out, and everyone can borrow one, then the following recursion: $$ \begin{aligned} N(n) &= N(n-1) + N(n-2) + N(n-3) \\ &= N(n-2) + N(n-3) + N(n-4) \\ &= N(n-4) + N(n-5) \\ &= 2N(n-5) \end{aligned} $$ where $N(n)$represents the number of plans to borrow $n$books from $n$books. For this question, if Xiao Ming has a new book worth $5$, he has to lend it out to A, B, and C. Each of the three students can borrow a book. Therefore, there are $N(5) = 2> times 2> times 3> times 3 = 36$ways to borrow it. Therefore, Xiao Ming had a total of $36$borrowing methods when he had $5$worth of new books.
100 books, 100 students, one for each college student, one for three primary school students,
This was a novel about the gap between the rich and the poor. In this world, the gap between the rich and the poor is very serious. Some people have a lot of wealth while others are very poor. In order to solve this problem, the government and enterprises are working hard to improve education and medical conditions to help those who are more difficult to obtain better education and medical services.
A, B, C, D movie cast list
The cast list for the movies included Zuo Sen, Xu Juncong, Wang Xiaoxi, Zhong Yi, Xu Chenglin, and Zhang Dajing.
Were the classes A, B, C, D in the Xianxia Academy classified according to the students 'abilities?
The A, B, C, D classes in Xianxia Academy were usually graded according to the students 'abilities. The abilities of Class A students were usually higher than the average level of the other classes, while Class D students were relatively weaker. This classification might be based on the students 'aptitude, talent, or training, or it might be set according to the requirements of the academy. However, the specific classification method may vary from novel to novel, and some novels may give different explanations.
The Four Books and Five Classics, what is the main theme of each book?
The Four Classics referred to the Great Learning, the Doctrine of the Meanings, the Analects of Confucius, and Mencius, while the Five Classics referred to the Book of Songs, the Book of History, the Book of Rites, the Book of Changes, and the Spring and Autumn Annals. Each book had a different theme, but they were all Confucian classics that mainly talked about Confucian ideas and values. The theme of The Great Learning was the Doctrine of the Middle Way, which emphasized that people should act impartially. The theme of The Doctrine of the Middle Way was the Beauty of the Middle Way, which emphasized that people should pursue the Middle Way and maintain a state of balance and harmony. The theme of The Analects of Confucius was the Way of Benevolent Government, which emphasized that Confucianism believed that the best way of politics was to implement benevolent government to make the people happy and healthy. The theme of Mencius was that people were born with good nature, which should be cultivated and promoted as much as possible. The theme of Shang Shu was "the teaching of destiny", emphasizing that people should follow the destiny and respect the laws of nature to strive hard; the theme of the Book of Rites was "the way of rites and music", emphasizing that people should follow the system of rites and music to maintain social harmony and stability; the theme of Zhou Yi was "the sixty-four hexagrams of Zhou Yi", emphasizing that people should understand the destiny and life trajectory through divination; the theme of the Spring and Autumn Annals was "the meaning of the Spring and Autumn Annals", emphasizing that people should abide by moral norms, respect historical traditions and maintain social order.
Who is the A, B, C, D arranged by Xu Xiao?
Xu Xiao arranged for A, B, C, and D to be Xu Fengnian's sister, Xu Weixiong, nameless Deathsworn B, Xu Fengnian's personal maid, Qing Niao, and nameless Deathsworn D.
Who is the A, B, C, D arranged by Xu Xiao?
Xu Xiao arranged for A, B, C, and D to be Xu Fengnian's second sister, Xu Weixiong, the nameless B and D, and Qing Niao.
Who is the A, B, C, D arranged by Xu Xiao?
Xu Xiao arranged for A, B, C, and D to be Xu Fengnian's sister, Xu Weixiong, nameless Deathsworn B, Xu Fengnian's personal maid, Qing Niao, and nameless Deathsworn D.
Who is the A, B, C, D arranged by Xu Xiao?
Xu Xiao arranged for A, B, C, and D to be Xu Fengnian's sister, Xu Weixiong, nameless Deathsworn B, Xu Fengnian's personal maid, Qing Niao, and nameless Deathsworn D.