The number of ways of distributing 15 things to 4 persons each receiving at least two is

Find the number of ways to distribute 15 identical things among four persons if each gets at least two things.

The number of ways of distributing 50 identical things among 8 persons in such a way that three of them get 8 things each,two of them get 7 things each and remaining 3 get 4 things each,is equal to

The number of ways of distributing 12 different objects among three person such that one particular person is always getting 6 objects and the remaining two persons are getting three objects each is

Find the number of ways of disturbing n identicalobjects among n persons if at least n-3 persons get none of these objects.

The number of ways can 5 things be divided between A and B so that each receive at least one thing is

The number of ways of distributing 3 identical physics books and 3 identical methematics books among three students such that each student gets at least one books is

Ten persons are arranged in a row.The number of ways of selecting four persons so that no two persons sitting next to each other are selected is