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Popular >

9 choose 2

Solution

9c2

Solution

36

Solution steps

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

Plug in

n = 9, r = 2

= \frac{9 !}{2 ! ( 9 - 2 ) !}

\frac{9 !}{2 ! ( 9 - 2 ) !} = 36

= 36

Popular Examples

8 n C r 3

std of 7.94,8.01,7.97,8 standard deviation

7.94, 8.01, 7.97, 8

19 C 3

median of 48,54,84,100,124,188,256 median

48, 54, 84, 100, 124, 188, 256

arithmeticmean of 2,-2,-38 average

2, - 2, - 38

Frequently Asked Questions (FAQ)

What is 9 choose 2 ?
The answer to 9 choose 2 is 36