Question

Is 6.416 an irrational number?

Answer 1

No, any terminating decimal number is rational.

Explanation:

The real numbers `(RR)` consist of the union of the rational numbers `(QQ)` and the irrational numbers `(ZZ)`

Any number that can be expressed as a terminating or recurring decimal is rational - i.e `in QQ`

A number `in ZZ` cannot be expressed by a terminating decimal.

Hence, `6.416` is `in QQ` and therefore `not in ZZ`