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Popular >

C(20,2)

Solution

C(20, 2)

Solution

190

Solution steps

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

Plug in

n = 20, r = 2

= \frac{20 !}{2 ! ( 20 - 2 ) !}

\frac{20 !}{2 ! ( 20 - 2 ) !} = 190

= 190

Popular Examples

order 55,55,50,52,46,38,47,51,55,56 order

55, 55, 50, 52, 46, 38, 47, 51, 55, 56

arithmeticmean of 42,45,58,63 average

42, 45, 58, 63

median of 2,3,1,4,4,3,4,12,15,1,4 median

2, 3, 1, 4, 4, 3, 4, 12, 15, 1, 4

arithmeticmean of 12,5,8,10 average

12, 5, 8, 10

std of 59,63,59,59,60,59,63 standard deviation

59, 63, 59, 59, 60, 59, 63

Frequently Asked Questions (FAQ)

What is C(20,2) ?
The answer to C(20,2) is 190