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Popular >

20ncr2

Solution

20ncr2

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

9 C 8

order-sqrt(300),-17.3, 127/10 ,-17 9/26 order

- 300, - 17.3, \frac{127}{10}, - 17 \frac{9}{26}

15 P 2

variance of 1,9,4,12,13,13 variance

1, 9, 4, 12, 13, 13

arithmeticmean of 0.93,0.9,0.89,0.92,0.93,0.86,0.93,0.87,0.8,0.9 average

0.93, 0.9, 0.89, 0.92, 0.93, 0.86, 0.93, 0.87, 0.8, 0.9

Frequently Asked Questions (FAQ)

What is 20ncr2 ?
The answer to 20ncr2 is 190