Question 1192637: Seven Grade 10 learners volunteered to join the promotions committee
that will support the projects of the school’s supreme student government.
In how many different ways can 4 learners be selected in the promotions committee?
Answer by ikleyn(52781)   (Show Source):
You can put this solution on YOUR website! .
In general, 4 items can be selected from 7 items in  =  = 35 different ways,
independently on what these items are (students, teachers, professors, runners, pencils, cars, dogs, cats, balls, nails etc.)
These numbers  and the conception itself are called combinations.
Solved and explained.
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On Combinations, see introductory lessons
- Introduction to Combinations
- PROOF of the formula on the number of Combinations
- Problems on Combinations
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.
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