angels1168 angels1168
  • 18-06-2017
  • Mathematics
contestada

can someone help me with this and explain: Compute 28P7

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Sxerks Sxerks
  • 18-06-2017
Using the factorial notation of the permutation formula, we get:

[tex]nPr = \frac{n!}{(n - r)!}[/tex]
[tex]28P7 = \frac{28!}{(28 - 7)!}[/tex]
[tex]= 28 \cdot 27 \cdot 26 \cdot 25 \cdot 24 \cdot 23 \cdot 22[/tex]
[tex]= 5 967 561 600[/tex]
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