A restaurant offers 3 appetizers and 15 main courses. In how many ways can a person order a two-course meal?
Solution:-
Recall The Fundamental Counting Principal.
If you can choose one item from a group of M items and a second item from a group of N items, then the total number of two-item choices is M * N.
Choosing from one of 3 appetizers and one of 15 main meals, we can let M = 3 and N = 15.
Thus, by evaluation the following product, we obtain our answer.
3 * 15 = 45
Therefore are 45 ways a person can order a two-course meal.