on how many nights may a watch of 4 men be drafted from a crew of 24, so that no two watches are identical On how many of would any one man be taken?

On how many nights may a watch of 4 men be arranged by a security agency from a crew of 16 so that no two watches are identical. On how many of these nights would a particular person be off-duty ?

On how many nights may a watch of 4 men be arranged by a security agency from a crew of 16 so that no two watches are identical. On how many of these nights would a particular person be off-duty ?

In how many ways can a party of 4 men and 4 women be seated at a circular table so that no two women are adjacent?

In how many ways can a party of 4 men and 4 women be seated at a circular table so that no two women are adjacent?

In how many ways can 7 men be slected from 16 men so that 4 paticular men will always be there ?

In how many ways can 7 men be slected from 16 men so that 4 particular men will not be there ,

In how many ways 4 boys and 6 girls be seated in a line so that no two boys may sit together ?

In how many ways can be 9 man be selected from 15 men so as always to Include 3 particular man.

In how many ways can a committee of 5 can be chosen from 6 men and 4 women so as to have at the most 3 men.

In how many ways can be 9 man be selected from 15 men so as always to exclude 3 particular man.