Uma has made a sweet chikki .She wanted it to be rectangular .In how many different ways can she verify that it is rectangular?

A triglyceride can have how many different acyl groups ?

There are 4 mangoes, 3 apples, 2 oranges in a bag, fruits of the same variety being identical. In how many different ways can a selection of fruits be made if atleast one of each kind is to be selected

There are 4 mangoes, 3 apples 2 oranges in bag, fruits of the same variety being identical. In how many different ways can a selection of fruits be made if atleast one fruit is to be selected.

Five balls are placed in three boxes. Each box can hold all the five balls. In how many different ways can we place the balls in the boxes so that no box remains empty if the balls and the boxes are different

Five balls are placed in three boxes. Each box can hold all the five balls. In how many different ways can we place the balls in the boxes so that no box remains empty if the balls as the boxes are identical.

In how many ways 5 letters can be posted in 4 post boxes.

In a hall, there are 10 different lamps. In how many ways can the hall be lighted.

a man has 4 friends , in how many ways can he inivite one or more them to dinner ?

In how many ways can you write the electronic configuration of an atom?