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C ( 16, 2) combination

Sagot :

Sqdancefanidn

9514 1404 393

Answer:

  120

Step-by-step explanation:

The function C(n, k) can be written in terms of factorials:

  C(n, k) = n!/(k!(n -k)!)

Then ...

  C(16, 2) = 16!//(2!(16 -2)!) = (16·15)/(2·1)

  C(16, 2) = 120

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