Question

1. $4^{-2}$

Explanation:

Step1: Apply negative exponent rule

A negative exponent means reciprocal: $a^{-n}=\frac{1}{a^n}$, so $4^{-2}=\frac{1}{4^2}$

Step2: Calculate the denominator

Compute $4^2 = 4\times4=16$, so $\frac{1}{4^2}=\frac{1}{16}$

Answer:

$\frac{1}{16}$