Hey there!!
Let's learn the basic formula -
( a + b ) ( a - b ) = a² - b²
Let's break 24 × 16
We can write this as
( 20 + 4 ) × ( 20 - 4 )
This is in the form of ( a - b ) ( a + b )
Hence, ( 20 + 4 ) ( 20 - 4 ) = ( 20 )² - ( 4 )²
= 400 - 16
384
The required answer is 384
Hope my answer helps!!