On a book shelf there are 4 (different) math books and 6 (different) cs books. in how many ways can the books be arranged so that the math books are next to each other and the cs books are next to each other?

The answer is 1728 way

well if he bought them at 5 cedis each sold them at 7 cedis each then he would make a profit of 2 cedis of each book. if in total he made 150 cedis profit that means he sold 75 books. he lost 12 books at the start so that means he originally bought a total of 82 books.

step-by-step explanation:

the answer is d

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