Posted by **Michelle** on Sunday, December 8, 2013 at 5:48pm.

Teng is designing a house and in each room he can choose from tiles, floorboards, or carpet for the floor.

a. How many combinations of flooring materials are possible if her designs a 2 room studio?

b. How many combinations are possible for a 3 room apartment?

c. How many combinations for a 4 room flat?

d. How many combinations for an "n" room house?

e. He finally decides on an 8 room house. How many different combinations are possible?