How many ways can 3 students be arranged in three chairs? I'm not really sure but I think that the answer will be 9 (nine), is that correct..?

Answer 1

No, it is 6 ways.

Think it through this way:
The first chair can be filled in 3 ways, for each of those the second chair in 2 ways, leaving only one way to fill the 3rd chair.
So ...
3x2x1 = 6