Question

there are 10 books in a shelf with different titles five of these have red cover and others have green cover in how many way can this be arranged so that the red books are placed together​

Answer 1

Step-by-step explanation:

arrange by book's title's alphabet

Answer 2

Answer:

6! × 5!

Step-by-step explanation:

1. Assume all 5 red books as one , so there are total 6 books , there are 6! ways to rearrange them .
2. We can rearrange 5 red books in 5! ways .