SOLUTION: 1. In how many ways can 5 questions be selected out of 8 questions?

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Question 217737: 1. In how many ways can 5 questions be selected out of 8 questions?
Answer by drj(1380) About Me  (Show Source):
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1. In how many ways can 5 questions be selected out of 8 questions?

Step 1. This is a combination problem where we have the following formula for this problem.

n%21%2F%28n-x%29%21

where n! means n factorial or n*(n-1)*....1 and n=8 and x=5 for this example.

Step 2. Then,



Step 3. ANSWER: There are 6720 ways to select 5 out of 8 questions.

I hope the above steps were helpful.

For free Step-By-Step Videos on Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra or for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

And good luck in your studies!

Respectfully,
Dr J