###### Exercise16

Determine the validity of each statement by selecting True or False.

The number \(\sqrt{\frac{4}{81}}\) is rational, but not an integer

The number \(-2\) is an integer that is also a natural number

The number \(\frac{31}{16}\) is rational, but not a natural number

The number \(\sqrt{31}\) is a real number, but not an irrational number

The number \(\sqrt{23^2}\) is a real number, but not a rational number