Give an example of two irrational number whose sum is rational ?

A number which is of the form p / q is called a rational number where q is not equal to zero and p should be an integer. However the example that you wrote, in that we have 2 3 as an irrational number.

The two irrational numbers which are conjugate of each other like 2 - 3 and 2+3 gives the rational sum.