$\displaystyle{8}\sqrt{{{4}}}\usepackage{cmbright}\Huge\$ can be written as $\displaystyle{8}\cdot{2}={16}\usepackage{cmbright}\Huge\$ , which is a whole number. It can also be written as $\displaystyle\frac{{16}}{{1}}\usepackage{cmbright}\Huge\$ . Which number cannot be represented in the form $\displaystyle\frac{{p}}{{q}}\usepackage{cmbright}\Huge\$ , where both p and q are integers?