SOLUTION: If there are 30 students in the class and we need to elect a President and Treasurer for our meetings, how many possibilities are there

Question 1174608: If there are 30 students in the class and we need to elect a President and Treasurer for our meetings, how many possibilities are there
Answer by ikleyn(52817)   (Show Source): You can put this solution on YOUR website!
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30 ways to select the President

and 29 ways to select the Treasurer.

In all, there are 30*29 ways different ways to select this pair.

The order (ordering) is important in this problem, so it is about PERMUTATIONS.

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On Permutations, see introductory lessons
    - Introduction to Permutations
    - PROOF of the formula on the number of Permutations
    - Simple and simplest problems on permutations
    - Special type permutations problems
    - Problems on Permutations with restrictions
    - OVERVIEW of lessons on Permutations and 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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