Jay wants to buy a total of 100 plants using exactly a sum of Rs. 1000. He can buy Rose plants at Rs. 20 per plant or ma…

There are 10 seats around a circular table. If 8 men and 2 women have to seated around a circular table, such that no tw…

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

The number of ways of arranging n students in a row such that no two boys sit together and no two girls sit together is …

There are 6 equally spaced points A, B, C, D, E and F marked on a circle with radius R. How many convex pentagons of dis…

In how many different ways can the letters of the word BANANA be arranged?

In how many different ways can the letters of the word OPERATE be arranged ?

There are 7 non-collinear points. How many triangles can be drawn by joining these points?