Given the following circumstances, what counting formula should be used?

1) The order of selection is important.
2) Repetition is not allowed.
3) There are no identical objects.

A.
nPr
B.
nCr
C.
fundamental counting principle
D.
n!

I believe it is nPr but I want to double check

Question

Given the following circumstances, what counting formula should be used?

1) The order of selection is important.
2) Repetition is not allowed.
3) There are no identical objects.


A.
nPr
B.
nCr
C.
fundamental counting principle
D.
n!

I believe it is nPr but I want to double check

anonymous · Answer

you are right, although the counting principle works for all of them