A man has 7 friends. In how many ways can he invite one or more of them to a party ?

A man has 10 friends. In how many ways he can invite one or more of them to a party?

A man has 6 friends. In how many ways can he invite one or more of his friends to a party ?

Mohan has 8 friends, in how many ways he invite one or more of them to dinner?

A man has 6 friends. Number of ways he can invite one or more of them to a tea party is

In how many ways can a person invite one or more of his 8 friends to a feast ?

In how many ways can a tissue grow in size?

Seven relatives of a man comprises four ladies and three gentlemen: his wife has also seven relatives-three of them are ladies and four gentlemen. In how many ways can they invite 3 ladies and 3 gentlemen at a dinner party so that there are three mans relatives and three wifes relatives?

A committee of 3 persons is to be constituted from a group of 2 men and 3 women. In how many ways can this be done? How many of these committees would consist of 1 man and 2 women?

A committees of 3 persons is to be constituted from a group of 2 men and 3 women. In how many ways can this be done ? How many of these committees would consist of 1 man and 2 women ?