Answer:
216
Step-by-step explanation:
If repetition is allowed, there is a formula known as permutation of repetition, n^r
n is known as the total number of objects in the given set, and r is the number of objects chosen in that set.
In this case n would be 6, and r would be 3
so the totoal number of different three digit numbers would be 6^3 = 216.
if repetition was not allowed though, the formula would be n!/(n-r)!
where n and r represent the same thing as before, but ! means factorial, so something like 3! would be 3x2x1, or 4! would be 4x3x2x1
So here the formula would translate to 6!/(6-3)! = 120
Hope that answers your questionf
