Question

Find the product of the following using properties:

$7909\times 991$

Answer 1

Finding the product:

The given expression is $7909\times 991$

$\therefore 7909\times 991=7909\times \left(1000-9\right)$ (By using the distributive property of multiplication over subtraction)

$$\begin{gathered} =7909\times 1000-7909\times 9 \\ =7909000-71181 \\ =78,37,819 \end{gathered}$$

Hence, the product of the given expression is $78,37,819.$