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At a restaurant you can choose from 3 appetizers, 8 entrees, and 2 desserts. How many different three-course meals can you have?

Short Answer

Expert verified
There are 48 different three-course meals possible.

Step by step solution

01

Understanding the Problem

To find how many different three-course meals can be created, we multiply the number of choices for each course (appetizer, entree, and dessert) because each meal consists of selecting one from each category.
02

Calculate Appetizer Choices

Determine the number of ways to choose an appetizer. Since there are 3 appetizers, there are 3 choices at this stage.
03

Calculate Entree Choices

Determine the number of ways to choose an entree. There are 8 entrees, which means there are 8 choices for this course.
04

Calculate Dessert Choices

Determine the number of ways to choose a dessert. With 2 desserts available, there are 2 choices for this part of the meal.
05

Multiply Choices Together

To find the total number of different meals possible, multiply the choices for appetizers, entrees, and desserts together: \( 3 \times 8 \times 2 \).
06

Calculate Final Solution

Perform the multiplication: \( 3 \times 8 = 24 \), and then \( 24 \times 2 = 48 \). Therefore, there are 48 different three-course meal combinations possible.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Multiplication Principle
The multiplication principle is a fundamental idea in combinatorics, which helps in counting different ways combinations are formed. Whenever we want to determine the total number of possible outcomes from a series of events, where each event is independent, we use this principle. Each step or event choice can be multiplied together to find the total combination of choices.

In the context of our restaurant problem, imagine you have separate stages: choosing an appetizer, choosing an entree, and then choosing a dessert. The multiplication principle tells us to multiply the number of choices at each stage to get the final outcome.
  • If you have 3 appetizers, 8 entrees, and 2 desserts, you should multiply these numbers (3 appetizers × 8 entrees × 2 desserts).
  • The multiplication principle assumes that the choice of one part of the meal does not affect the availability or choice of another part.
This method is very useful when dealing with structured tasks like creating meals from a menu as it provides the total number of combinations quickly.
Counting Methods
Counting methods are strategies used in combinatorics to count possible outcomes in a situation without actually listing them all. These methods simplify complex scenarios and make solving problems like our restaurant menu much more straightforward.

In our exercise, we use a counting method focused on multiplication because each category of meal choice (appetizer, entree, dessert) can be selected independently. This approach makes it simple:
  • Consider each choice category as a separate task.
  • Multiply the number of options in each category to find the total number of combinations.
  • Thus, for our scenario: 3 (appetizers) × 8 (entrees) × 2 (desserts) = 48 possible three-course meals.
The goal of counting methods is not only to count efficiently but also to understand the problem structure to choose the best counting technique.
Probability
Probability is the study of uncertainty and the likelihood of different outcomes. While our current exercise is more about counting possibilities, understanding basic probability connects naturally to these concepts.

Suppose we wanted to find the probability of randomly picking a particular three-course meal combination from all possible outcomes. We would use the total number of combinations as a baseline for calculating probability.
  • To find the probability of picking a specific meal, you would compute: Probability = \( \frac{1}{\text{Total Combinations}} \).
  • With 48 combinations, the probability of any specific meal being chosen (assuming each is equally likely) would be \( \frac{1}{48} \).
While the problem didn't directly involve probability, understanding how probability and counting are related can enhance problem-solving skills by helping to comprehend likelihood in any scenario.

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