Question
Asked Feb 18, 2019
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How many ways can you choose 5 out of 10 friends to invite to a dinner party?

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Expert Answer

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Step 1

To solve the problem of combinations (selections) in the given scenario.

Step 2

Let us start with a similar problem with smaller numbers to understand what is involved. Replace the numbers 5 and 10 by 2 and 3. Denote the three persons as A, B and C. We are choosing (selecting) two among these three at a time. The possible choices are listed here. 

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Step 3

The number of selexctions in this case can be identified as th...

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Math

Advanced Math