Question

For the next school year, you must take math, English, science, and one elective. You must take all four classes in one day. How many class schedules are possible?
A. 4
B. 10
C. 12
D. 24

Answer 1

4•3•2•1=24
4 ways to fill the spot for first class
3 ways to fill the spot for second class
2 ways to fill the spot for 3rd class
1 way to fill the spot for 4th class