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From a group of 6 women and 8 men, a committee consisting of 4 men and 3 women is to be formed.
how many different committees can be formed if three men refuse to serve?
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You can select 4 men from a group of 8-3 = 5 men in = 5 different ways.
You can select 3 women from a group of 6 women in = = 20 different ways.
Combining these different groups of men and women, you can form the commiittee in 5*20 = 100 different ways.
Solved.
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This problem is on COMBINATIONS.
It also uses the Fundamental counting principle.
On these subjects, learn from the lessons
- Introduction to Combinations
- PROOF of the formula on the number of Combinations
- Problems on Combinations
- Fundamental counting principle problems
in this site.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Combinatorics: Combinations and permutations".
Save the link to this textbook together with its description
Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson
into your archive and use when it is needed.