Question

Is 9.99 rational or irrational

Answer 1

Rational

Explanation:

A rational number can be written as a fraction of the form.

`(a)/(b) \: where \: b \\e0`

and a and b are integers.

`9.99 = (999)/(100)`

Hence in this case a=999 and b=100.

Since both are integers with b being a non-zero integer, we conclude that 9.99 is a rational number.