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Popular >

18 choose 2

Solution

18C2

Solution

153

Solution steps

= \frac{n !}{r ! ( n - r ) !}

Plug in

n = 18, r = 2

= \frac{18 !}{2 ! ( 18 - 2 ) !}

\frac{18 !}{2 ! ( 18 - 2 ) !} = 153

= 153

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Frequently Asked Questions (FAQ)

What is 18 choose 2 ?
The answer to 18 choose 2 is 153