Question

We can represent 196 in exponential form as .

• A. $2^3\times 7^2$
• B. $2^2\times 7^2$
• C. $2^2\times 7^3$
• D. $2^2\times 7$

Answer 1

The correct option is B $2^2\times 7^2$

To represent 196 in exponential form,we can solve it through prime factorisation

$\begin{array}{cc}2& 196\\ 2& 98\\ 7& 49\\ 7& 7\\ & 1\end{array}$
$\Rightarrow$196=$2^2\times 7^2$