Question

In how many ways 6 books out of 10 different books can be arranged in a book-self so that 3 particular books are always together

Please explain the answer to this sum

Answer 1

Answer:

10080

Step-by-step explanation:

considering 3 books as together as 1

4 books are arrangef among 8 boks in 8p4 ways =1680

now the 3 books are arranged among themselves in 3 factorial ways =6

total nos of ways =1680×6=10080 ways