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Popular >

20 choose 3

Solution

20C3

Solution

1140

Solution steps

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

Plug in

n = 20, r = 3

= \frac{20 !}{3 ! ( 20 - 3 ) !}

\frac{20 !}{3 ! ( 20 - 3 ) !} = 1140

= 1140

Popular Examples

6 C 5

std of 50,62.5,37.5,75,45,47.5,15,25 standard deviation

50, 62.5, 37.5, 75, 45, 47.5, 15, 25

3 C 1

4 n C r 2

arithmeticmean of 42,78,53 average

42, 78, 53

Frequently Asked Questions (FAQ)

What is 20 choose 3 ?
The answer to 20 choose 3 is 1140