Answer:
Every Rational number when multiply by 0.5 produces a rational number.
Step-by-step explanation:
Rational Number is a number that can be changed in the formation of
, where p & q are real numbers and q ≠ 0.
Even a natural number can also be a rational number since it can be change into 
So, the every rational number when multiply by 0.5 produces a rational number. For example: 2 × 0.5 = 1 (rational number)
7 × 0.5 = 3.5 (rational number)
42.63 × 0.5 = 21.315 (rational number)
But,
= irrational as it has non terminating decimal number (also
is irrational number)