Question

Using properties of multiplication, Find $(-78)\times 49$

Answer 1

Given, $(-78)\times 49$

Now,

$$\begin{gathered} (-78)\times 49=(-78)\times \left[50-1\right](distributiveproperty) \\ =(-78)\times 50-(-78)\times 1 \\ =(-3900)-(-78) \\ =-3900+78=-3822 \end{gathered}$$

Hence, the required value is $-3822$