Question

how do you use an exponent to represent a number such as 16?

Answer 1

First we need to Factorise the Number using LCM method.
The Method which is used to Find LCM of 2 numbers but here Just 1 number.
So,Once done 16=2*2*2*2
Here 2 is multiplying with itself 4 times So,$16= 2^{4}$.