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Popular >

20 choose 1

Solution

20c1

Solution

20

Solution steps

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

Plug in

n = 20, r = 1

= \frac{20 !}{1 ! ( 20 - 1 ) !}

\frac{20 !}{1 ! ( 20 - 1 ) !} = 20

= 20

Popular Examples

5 C 5

std of 31,34,28,37,35,30,29 standard deviation

31, 34, 28, 37, 35, 30, 29

1 n C r 1

12 n C r 3

arithmeticmean of 12,7,12,9,2,15,6,6,6,1,11 average

12, 7, 12, 9, 2, 15, 6, 6, 6, 1, 11

Frequently Asked Questions (FAQ)

What is 20 choose 1 ?
The answer to 20 choose 1 is 20