Difference between revisions of "A choose b"
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== Why is it important? == | == Why is it important? == | ||
− | a choose b | + | a choose b counts the number of ways you can pick b things from a set of a things. For example $\binom{8}{2}=\frac{8!}{2!(8-2)!} |
Revision as of 16:50, 15 June 2019
Here is the formula for a choose b: . This is assuming that of course .
Why is it important?
a choose b counts the number of ways you can pick b things from a set of a things. For example $\binom{8}{2}=\frac{8!}{2!(8-2)!}