Question

Q1) Is it possible to multiple a rational number and an irrational number to give an answer which is rational?

Q2) Is it possible to multiply two irrational numbers together to give a rational answer?

Q3) If either or both are possible, give an answer :)

Answer 1

Second one is possible
(5+root2)* (7+root18)
= 35+6. (Root 18=3*3*2 so we get 2 from another pair )
= 41 ; which is rational