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Popular >

4 choose 2

Solution

4 choose 2

Solution

6

Solution steps

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

Plug in

n = 4, r = 2

= \frac{4 !}{2 ! ( 4 - 2 ) !}

\frac{4 !}{2 ! ( 4 - 2 ) !} = 6

= 6

Popular Examples

17 n C r 5

arithmeticmean of 28,30,32,34,36,38,40 average

28, 30, 32, 34, 36, 38, 40

arithmeticmean of 11,12,15,17,18 average

11, 12, 15, 17, 18

52 n C r 5

std of 74,70,72,78,90,88,100,80,89,80 standard deviation

74, 70, 72, 78, 90, 88, 100, 80, 89, 80

Frequently Asked Questions (FAQ)

What is 4 choose 2 ?
The answer to 4 choose 2 is 6