Question

what is constant and variable explain both of them.

Answer 1

The value of constants cannot be changed .For ex. 1,4,8, etc.
The value of variables can be changed. For ex. a,g,n,x etc.

Answer 2

Variable : A variable is denoted by a Letter of English alphabet and that can take any value .

• Example : x, y, a, b, z, c, etc

Constant : The Values of constant remain same throughout the Situation i.e value of constant doesn't change in a problem

• Example : 1, 2, 3, 4, 5, etc