Question

give give one example of two irrational numbers whose sum is a rational number

Answer 1

√2 and -√2
or any similar pair

Answer 2

Two irrational numbers whose sum is rational are
10 + 2√5 and 5 - 2√5
Checking:
Sum of these two irrational numbers = 10 + 2√5 and 5 - 2√5 = 15 (a rational number)