In a city, the bus route numbers consist of a natural number less than 100, followed by one of the letters A,B,C,D,E and F. How many different bus routes are possible?
Correct Answer : A
In how many ways a committee consist of 8 men and 2 women can be formed from 12 men and 5 women?
The number of ways in which a committee of 3 ladies and 4 gentleman can be appointed from a meeting consisting of 8 ladies and 7 gentleman, if Mrs x refuses to serve in a committee, if Mr. y is its member, is:
A man has 10 friends whom he wants to invite for dinner. The number of ways in which he can invite at least one of them is: