Permuation or combination question

Question

Susan can choose to take ballet, tap, jazz  or piano lessons. She can choose to take a 30 minute lesson or a 60 minute lesson each week. She can choose to take lessons at the community center or private lessons. How many different combinations are possible?

A. 18

B. 16

C. 8

D. 4

Answer 1

4 styles X 2 lengths X 2 locations = the ____ different ways Susan can study dance