Xiao Ming's bookcase had storybooks, fairy tales, and science books. Xiao Xin wanted to borrow two of them. There were many different ways to choose.

Xiao Ming had many books, of which 110 to 150 books accounted for one-fifth of the books, which was between 550 to 750 books. The rest of the books could be divided into two categories: science books and literature books. Among them, the number of science and technology books accounted for one-seventh of the total number of books, which was 225 books. The number of literature books accounted for 100% of the total number of books, which was 1000. Therefore, Xiao Ming's books were: 550 science books + 225 literature books = 775 books Xiao Ming had a total of 775 books.

China Youth Digest is a different type of novel magazine. To take out two kinds of books, you need to consider which type of book to take out. If the book that Xiaoming took out belonged to the category of " Young Master's Book " or " Young Master's Book ", then there was only one way to get it. If the book that Xiaoming took out belonged to Happy Reading or China Youth Digest, there were two different ways to take it. Therefore, there was only one different way for Xiao Ming to select the two books from the Youth's Literature, the Young Master's Daily, Happy Reading, and the Chinese Youth's Digest.

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.

Shōnen Bo, Little Master's Daily, Happy Reading, and China Shōnen Digest were all different types of novels. Their names already explained their content. Xiao Ming took out two books from the book, which could be divided into two categories according to the specific situation. For example, Xiao Ming could take out a book from the Youth's Books and Happy Reading. That way, he would have two kinds of books. Xiao Ming could also take out a book from the Book of Youth and another book from the Happy Reading. That way, he would only have two kinds of books left. These two methods had two different methods.

The Celestial Slaying Fictions was a fantasy novel written by Xiao Ding. It told the love story between the protagonist Zhang Xiaofan and Biyao. Biyao was Zhang Xiaofan's childhood sweetheart, and they had a deep relationship. However, at the end of the novel, Biyao's ending did not get a clear development. As far as I know, Xiao Ding did not update the ending of the fairy tale, so I cannot be sure if Bi Yao is still alive. The author might choose not to continue the story after the story had been told, leaving an open-ended ending for the readers to imagine and interpret.

Xiao Jun had given him four more storybooks than Xiao Ling. It could be calculated that since Xiao Jun gave Xiaoling 8 books, the two of them had the same number of books. Therefore, Xiao Jun must have given Xiaoling 8/2=4 more books. Therefore, Xiao Jun gave her four more storybooks than Xiao Ling. I hope you like this fairy's recommendation. Muah ~😗

Xiao Ming's mother: If Xiao Ming's mother was his father's sister, then Xiao Ming's mother was his aunt. Because his aunt and cousin were close relatives, Xiao Ming's mother and Xiao Ming were cousins. However, Xiaoming's mother and Xiaoming were not biological brothers, so Xiaoming's mother was not Xiaoming's biological mother. In this case, we can treat Xiao Ming's mother as Xiao Ming's adoptive mother or aunt.

In the novel,"Xiao Ming of the Empire of Science and Technology," Xiao Ming traveled to ancient times and became the six-year-old crown prince of the Sun Moon Empire.😋I recommend this novel to you. It tells the story of a modern person in ancient times who changed history with technology. I hope you like this fairy's recommendation. Muah ~😗

If Lingling had $x$storybooks, she would have had $7$comic books. Now, she wanted to make the number of comic books 3 times the number of storybooks, which meant that she wanted to have 24 times 3 = 72 comic books. Since the number of storybooks remained the same, Lingling still needed $72 - x$storybooks. To make a comic book three times the number of story books, the number of comic books should be three times the number of story books, which is $24 = 3,7 = 21 comic books. Therefore, Ling Ling now has $72 - x = 21 - 7 = 14$storybooks, where $x$is the number of original storybooks.

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