From an organization of 6 persons, in how many ways can we choose a manager and senior manager assuming one person cannot hold more than one position?
There are 12 different chocolates placed on a table along a straight line. In how many ways can a person choose 4 of them such that no 2 of the chosen chocolates lie next to each other?
6 boys and 7 girls are available for a counselling. In how many ways, we can arrange them in a row, if middlest one is a boy and girls are sat on both the corners?
In a group of 6 boys and 4 girls, four children are to be selected. In how many different ways can they be selected such that at least one boy should be there?
There are 13 members in a committee having 7 men and 6 women . In how many ways a team of 4 persons can be selected in such a way that at least 1 man would be there in the team ?
