In how many ways can 7I. A and I.Sc. Students be seated in a row so that no tow f the I.Sc students may sit together?

In how may ways can 6 girls and 4 boys be seated in a row so that no two boys are together ?

In how many ways can 4 girls and 3 boys be seated in a row so that no two boys are together?

In how many ways can 5 girls and 3 boys be seated in a row so that no two boys are together?

In how many ways 5 boys and 3 girls be seated in a row so that no tow girls are together?

In how many ways can 7 boys and 2 girls be seated in a row so that two giirls are together ?

In how many wys can 4 boys and 3 girls be seated ina row so tht no two girls are together?

In how many ways can 5 boys and 3 girls sit in a row so that no two girls are together ?

In a dinner party there are 10 Indians, 5 Americans and 5 Englishmen. In how many ways can they be seated in a row so tht all persons of the same nastionality sit together?

In how many ways can 5 boys and 3 girls be seated in a row so that each girl is between 2 boys?