AP BIOLOGY

HEREDITY

BASICS OF PROBABILITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A restaurant serves 5 main dishes, 3 salads, and 4 desserts. How many different meals could be ordered if each has a main dish, a salad, and a dessert?
A
5 x 3 x 4 = 60
B
5 + 3 + 4 = 12
Explanation: 

Detailed explanation-1: -5*3*4 = 60, so 60 different main meals could be ordered.

Detailed explanation-2: -Full Course Meals This will add to the course length, so a four-course dinner will include an appetizer, main dish, and dessert but also a fourth course-hors-d’oeuvres-served before the appetizer.

Detailed explanation-3: -Fundamental Principle of Counting Example: In the last example suppose that you make a meal consisting of an appetizer, an entree, a dessert, and a beverage. Then there are 5*9*6*8=2160 different meals.

Detailed explanation-4: -In general, the number of ways to choose and arrange 3 objects from a set of 8 objects is called “the number of permutations of 8 things taken 3 at a time, ” and this number is always 336.

There is 1 question to complete.