The value of $1-\left(5^{-2}\right)$ is
(A) $\frac{24}{25}$
(B) -24
(C) $\frac{26}{25}$
(D) 26
(E) $\frac{9}{10}$
Evaluating, using the rules for negative exponents,

$$
1-\left(5^{-2}\right)=1-\frac{1}{5^{2}}=1-\frac{1}{25}=\frac{24}{25}
$$