Question

Evaluate $22\times 24$ using even-even pattern.

• A. $428$
• B. $528$
• C. $628$
• D. None of these

Answer 1

The correct option is B $528$

$22\times 24=(23-1)$$\times$$(23+1)$

$\Rightarrow 22\times 24=$ ${23}^2-1^2$ $=$ $528$

Hence, option B is correct.