Question

Question 8
The product of a non – zero rational and an irrational number is

A) Always irrational
B) Always rational
C) Rational or irrational
D) One

Answer 1

The answer is A.
Product of a non - zero rational and an irrational number is always irrational.
For example,
$\frac{3}{4}\times \sqrt{2}=\frac{3\sqrt{2}}{4}$ (irrational)