From a group of 7 men 6 women, 5 persons are to be selected to form a committee so that at least 3 men are there on the …

In how many ways 2 students can be chosen from the class of 20 students?

In how many ways can the letters of the word ABACUS be rearranged such that the vowels always appear together?

A box contains 2 white, 3 black and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least 1 black…

A two member committee comprising of one male and one female member is to be constitute out of five males and three fema…

In how many ways can 15 people be seated around two round tables with seating capacities of 7 and 8 people?

In a party every person shakes hands with every other person. If there are 105 hands shakes, find the number of person i…

How many natural numbers less than a lakh can be formed with the digits 0,6 and 9?