Math Problem Statement
In a firm there are 20 men and 10 women. In how many can you have a committee with 3 men and 2 women?
Solution
To solve this problem, we need to form a committee consisting of 3 men and 2 women from a group of 20 men and 10 women.
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Choosing 3 men out of 20:
The number of ways to choose 3 men from 20 is given by the combination formula: where is the total number of men (20) and is the number of men to choose (3). Thus, the number of ways to choose 3 men is: -
Choosing 2 women out of 10:
Similarly, the number of ways to choose 2 women from 10 is: -
Total number of ways to form the committee:
Since the choices of men and women are independent, we multiply the two results:
Thus, the total number of ways to form a committee with 3 men and 2 women is 51,300.
Would you like more details on this, or do you have any questions?
Here are 5 related questions to further your understanding:
- How would the solution change if you needed a committee of 4 men and 1 woman?
- What is the total number of ways to form any committee of 5 members from this group?
- How would you calculate the probability of randomly selecting a committee with exactly 3 men and 2 women?
- If the number of women increased to 15, how would that affect the number of possible committees?
- What if the committee needed to have at least 1 woman—how would you approach that?
Tip: For problems involving selection or grouping, combinations (not permutations) are typically used, since the order of selection doesn’t matter.
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Math Problem Analysis
Mathematical Concepts
Combinatorics
Permutations and Combinations
Formulas
Combination formula: \( \binom{n}{r} = \frac{n!}{r!(n - r)!} \)
Theorems
Basic Counting Principle
Combination Theorem
Suitable Grade Level
Grades 10-12
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