Question

How many different groups of students can show up for a seminar with an enrollment of 12 ​?

Answer 1

The solution would be like this for this specific problem:

12! = 12 * 11 * 10 * 9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1

= 479,001,600

So there are 479,001,600 different group of students that can show up for a seminar with an enrollment of 12.