Difference between revisions of "A choose b"
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== Why is it important? == | == Why is it important? == | ||
| + | a choose b is the formula for counting the number of ways you can pick b things from a group a things. For example, how many ways can you pick a group of 5 people to do a certain job from 8 people. Using our formula we see that <math>\frac{8!}{5!(8-5)!}=\frac{8!}{5!(3)!}= frac{\(8)(7)(6)}{3!}=frac{\(8)(7)(6)}{6}=8(7)=42</math> | ||
Revision as of 16:46, 15 June 2019
Here is the formula for a choose b: 
. This is assuming that of course 
.
Why is it important?
a choose b is the formula for counting the number of ways you can pick b things from a group a things. For example, how many ways can you pick a group of 5 people to do a certain job from 8 people. Using our formula we see that $\frac{8!}{5!(8-5)!}=\frac{8!}{5!(3)!}= frac{\(8)(7)(6)}{3!}=frac{\(8)(7)(6)}{6}=8(7)=42$ (Error compiling LaTeX. Unknown error_msg)
