For breakfast, Sarah can choose eggs, granola or oatmeal as a main course, and orange juice or milk for a drink. Sarah says that the sample space for choosing one of each contains 3² = 9 outcomes. What is her error? Explain.
The error is that she squared 3 which is incorrect. By Fundamental Counting Principle, Sarah should have multiplied 3 (number of main course) and 2 (number of drinks) to obtain the sample space of 6.
Recommended textbook solutions
Nhan is getting dressed. He considers two different shirts, three pairs of pants, and three pairs of shoes. He choose one of each of the articles at random. What is the probability that he will wear his jeans but not his sneakers?
Shirt: Collared, T-shirt Pants: Khakis, Jeans, Shorts Shoes: Sneakers, Flip-Flops, Sandals