Thinking Mathematically (6th Edition)

The number of ways in which a series of successive things can occur is found by multiplying the number of ways in which each thing can occur. ---------- 1. The number of bedrooms can be chosen in 3 ways. 2. The number of bathrooms can be chosen in 2 ways. 3. The floor can be chosen in 2 ways. 4. The view can be chosen in 3 ways. Applying the Principle, the total number of apartment options is 3$\times$2$\times$2$\times$3$=36$ Sample apartment options: One bedroom - one bathroom - first floor - lake view. One bedroom - one bathroom - first floor - golf course view.