In how many can a collection of 30 books be divided into two groups of 10 and 20 so that the first group always contains a particular book ?

The number of ways can a collection of 30 books be divided into two groups of 10 and 20 so that the first group always contains a particular book is

In how many ways can 12 books be divided in 3 students equally?

In how many ways can 12 books be divided in 3 students equally?

In how many ways can one choose 5 books from 10 different books?

In how many ways can 8 books be divided between 2 students, if they get 3 and 5 books.

In how many ways can 8 books be divided between 2 students, if they get 3 and 5 books.

In how many ways can 15 students be divided into 3 groups of 5 students each such that 2 particular students are always together? Also find the number of ways if these groups are to be sent to three different colleges.

In how many ways 7 books can be arranged from 10 books?