Dfordham Dfordham

17-07-2016
Mathematics

contestada

There are 5 beaches competing to be the family friendliest according to one travel magazine. If only the top 3 are ranked - first, second, and third - how many different ways can the list appear?

A. 30 ways
B. 60 ways
C. 10 ways
D. 15 ways

Respuesta :

17-07-2016

You need to find the number of permutations of the 5 beaches, taken 3 at a time:
[tex]5P3=\frac{5!}{2!}=60\ ways[/tex]

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