Question

How do you simplify `12times11times10times9!`?

Answer 1

Either `12!` or `479001600`

Explanation:

Depending on what you mean by simplifying. `12*11*10*9!` is simply `12!` because `12!` is just `12*11*10*9*8*7*6*5*4*3*2*1` and `9!` is just `9*8*7*6*5*4*3*2*1`.

Now if you want to simplify to an easier to read expression, then you can just write `12!` and be done with it, however if you want to get the value for it, you will have to multiply each of the numbers out which can be a little tedious without a calculator. Assuming you have a calculator just type `12*11*10*9*8*7*6*5*4*3*2*1` to get your answer of `479001600` which is equivalent to `12!`.