A certain organisation has three committees. Only two persons are members of all committees, but every pair of committees have three members in common. What is the least possible number of members on any one committee? (a) 4       (b) 5       (c) 6      (d) None of these

A certain organisation has three committees. Only two persons are members of all committees,but every pair of committees have three members in common.What is the least possible numbers in common.What is the least commible number of members on any one committee? (a) 4 (b) 5 (c) 6 None of these

Out of 5 women and 4 men, a committee of three members is to be formed in such a way that at least one member is a woman. In how many different ways can it be done? (a) 76 (b) 80 (c) 84 (d) 96 (d) None of these

In how many ways can a committee be selected from 15 persons if the committee is to have : 3 members.

In how many ways can a committee be selected from 15 persons if the committee is to have : 13 members.

Out of 7 gents and 4 ladies a committee of 5 is to be formed.The number of committees such that each committee includes at least one lady is

In how many ways can a committee be selected from 15 persons if the committee is to have (i). 3 members, (ii). 13 members

In how many ways can a committee be selected from 15 persons if the committee is to have (i). 3 members, (ii). 13 members

12 members of a committee are to sit down at random round a table. Probability that there are 3 members between the two particular members A and B, is

12 members of a committee are to sit down at random round a table. Probability that there are 3 members between the two particular members A and B, is

Find the number of ways of forming a committee of 4 members out of 6 boys and 4 girls such that there is atleast one girl in the committee.