SOLUTION: a class has 30 students the class needs to select 3 representative.in how many ways can be done?

Question 1092855: a class has 30 students the class needs to select 3 representative.in how many ways can be done?
Answer by ikleyn(52776)   (Show Source): You can put this solution on YOUR website!
.
= = calculate it on your own.

It is the number of combinations of 30 items taken 3 at a time.

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On Combinations, see the 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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