jika (2½)²=1/q, maka nilai (4/25)² sama dengan a.0.01xq² c.10q² b.q² d.100q²

[tex] { (\frac{5}{2} )}^{2} = \frac{1}{q} \\ \frac{25}{4} = \frac{1}{q} \\ \frac{4}{25} = q[/tex]