In how many ways 6 gentleman and 3 ladies can be seated round a table so that every gentleman may have a lady by his side.

In how many ways can 20 persons be seated round a table if there are 9 chairs.

In how many ways can 24 persons be seated round a table, if there are 13 sets?

In how many ways 4 boys and 3 girls can be seated in a row so that they are alternate?

In how many ways can 3 ladies and 3 gentlemen be seated around a round table so that any two and only two of the ladies sit together?

In how many ways can 3 ladies and 3 gentlemen be seated around a round table so that any two and only two of the ladies sit together?

In how many ways 7 men and 7 women can be seated around a round table such that no two women can sit together

In how many ways 7 men and 7 women can be seated around a round table such that no two women can sit together

In how many ways 4 boys and 4 girls can be seated in a row so that boys and girls are alternate?

In how many ways can 6 persons be seated at a round table?

In how many ways can 5 persons be seated at a round table?