Concept: In this tutorial, you will learn to find a rational number between any two rational numbers by calculating the mean of the two numbers. It is quite simple method. There are more ways to find it, however, this is the easiest method. The tutorial is in Hindi.

Concept: In this tutorial, you will learn about the commutative property (commutative law) and its applicability on different arithmetic operations. You will learn that addition and multiplication hold the commutative property where as subtraction and division does not.