Question

Stella is organizing textbooks on her bookshelf. She has an English textbook, a biology textbook, a physics textbook, and a writing textbook. How many different ways can she line the textbooks up on her bookshelf?

Answer 1

24 ways

Explanation:

Books :

Physics = 1

English = 1

Biology = 1

Writing = 1

Total = (1 + 1 + 1 + 1) = 4 books

Number of ways of arrangement :

Total number of books! = 4!

4! = 4 * 3 * 2 * 1 = 24 different ways