kelleys17babygirl38
kelleys17babygirl38 kelleys17babygirl38
  • 23-06-2017
  • Mathematics
contestada

Find the number of permutations of the first eight letters of the alphabet taking five letters at a time.

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cyberiapark
cyberiapark cyberiapark
  • 23-06-2017
P(n,r)=P(8,4)=8!(8−4)! = 1680
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