how many ways can 3 students be arranged in three chairs?

3 answers

first chair: 3 choices
second chari:2 choices
third chair: 1 choice
what is 3*2*1?
if there the chairs are numbered
and students are a b and c
you can get

1 2 3
a b c
a c b
b a c
b c a
c a b
c b a

6 POSSIBLE WAYS
its denoted by 3!

WHICH IS = 3 x 2 x 1
you have a choice of 3 students for the first chair,
then of two students for the second chair and a choice of only one student for the third
1 way