SOLUTION: How many ways can 4 cars and 2 trucks be selected from 10 cars and 7 trucks to be tested for a safety inspection?

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Question 1170209: How many ways can 4 cars and 2 trucks be selected from 10 cars and 7 trucks to be tested for a safety inspection?
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

    In C%5B10%5D%5E4.C%5B7%5D%5E2 = %28%2810%2A9%2A8%2A7%29%2F%281%2A2%2A3%2A4%29%29%2A%28%287%2A6%29%2F%281%2A2%29%29 = 4410 ways.    ANSWER

Solved.

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This problem is about COMBINATIONS.

On Combinations,  see introductory lessons
    - Introduction to Combinations
    - PROOF of the formula on the number of Combinations
    - Problems on Combinations
    - Fundamental counting principle problems
    - 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.