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Popular >

C(n,3)

Solution

C(n, 3)

Solution

\frac{n ^{3} - 3 n ^{2} + 2 n}{6}

Solution steps

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

Plug in

n = n, r = 3

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

Simplify

\frac{n !}{3 ! ( n - 3 ) !} : \frac{n ^{3} - 3 n ^{2} + 2 n}{6}

= \frac{n ^{3} - 3 n ^{2} + 2 n}{6}

Popular Examples

P (8, 5)

mode of 1,2,5,6,7,8,2,3,4,9,1,1,4,8,1,2,5,0 mode

1, 2, 5, 6, 7, 8, 2, 3, 4, 9, 1, 1, 4, 8, 1, 2, 5, 0

order 17/5 ,-sqrt(10),sqrt(11),3.3 order

\frac{17}{5}, - 10, 11, 3.3

11 P 4

variance of 2,5,1,6,8,4,9,6,3,6 variance

2, 5, 1, 6, 8, 4, 9, 6, 3, 6

Frequently Asked Questions (FAQ)

What is C(n,3) ?
The answer to C(n,3) is (n^3-3n^2+2n)/6