Question

Evaluate $2^2\times 5^2$

• A. 49
• B. 100
• C. 1000
• D. $7^4$

Answer 1

The correct option is B 100

By the Laws of Exponents, we know that $a^m\times b^m=(ab{)}^m$
$\Rightarrow$ $2^2\times 5^2=(2\times 5{)}^2={10}^2$ = 100