iiibrahimaa77
iiibrahimaa77 iiibrahimaa77
  • 18-03-2017
  • Mathematics
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In how many ways can 4 singers be selected from 7 who came to an audition

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hannahl52
hannahl52 hannahl52
  • 18-03-2017
This math is known as permutations- the arrangement of a set of objects. A way that I use to solve these problems was by just multiplying the numbers, so the singer's can be selected in 28 ways.
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