Question

Find the value of $47\times 53$.

• A. $2451$
• B. $2471$
• C. $2491$
• D. $2501$

Answer 1

The correct option is C $2491$

Given, $47\times 53$

$=(50-3)(50+3)$.

We know, $(a+b)(a-b)=a^2-b^2$.

Then,

$47\times 53=(50-3)(50+3)$
$=(50{)}^2-3^2=2500-9=2491$.

Therefore, option $C$ is correct.