how do i get a factorial? how do i arrive at what to factor if you have 12 people and question asks "how many different ways can they be positioned for a photograph"?
The answer is 12!.....which is just the product of the first 12 positive integers
On the calculator, just key in "12!".......the answer will be .... 479,001,600
In fact, the way to arrange any N objects is just N!
