johnnie9495 johnnie9495
  • 28-04-2018
  • Mathematics
contestada

In how many ways can 2 singers be selected from 4 who came for an audition?

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konrad509
konrad509 konrad509
  • 11-08-2018

[tex] \displaystyle
\binom{4}{2}=\dfrac{4!}{2!2!}=\dfrac{3\cdot4}{2}=6 [/tex]

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