Answer:
180 in
Step-by-step explanation:
10*6*3=180
Permutations are written as nPx where n is the number of total choices possible and x is the number of choices that will be used. This is calculated as nPx = n! / (n-x)!.
Permutations represent the number of ways we can choose x objects from n possibilities where the order of selection matters.
You devide by 4 and it is 21 over 25
When you have a negative exponent, you move the base with the negative exponent to the other side of the fraction to make the exponent positive.
For example:
or 
or 
or 
Make the exponent positive
(this is as far as you can simplify)
