anonymous
  • anonymous
a relay race has a team of 4 runners who run differnet parts of the race. there are 20 students on your track squad. in how many ways can the coach select students to compete on the relay team?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
if youre going to type down an answer....then yeah
anonymous
  • anonymous
This looks like a straight forward permutation.20P4 ways i.e 160000 ways
anonymous
  • anonymous
sorry it is 116280

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anonymous
  • anonymous
if its permutation it would be 116280 but if its combination it would be 4845 im not sure whether its permutation or combo
anonymous
  • anonymous
it is a permutation since order does matter
anonymous
  • anonymous
I calculated wrongly.20P4 = 116280 ways
anonymous
  • anonymous
oh is it because it says "diff. parts of the race"
anonymous
  • anonymous
Let us take one person .This same person can run in any part of the race (i.e first,second, third or fourth).So every order is important
anonymous
  • anonymous
right, thanks!!!!!!!!!!!!!!
anonymous
  • anonymous
by the way, I posted the answer to your other question on permutations i.e the one about selecting the editor in chief
anonymous
  • anonymous
It is merely 20 * 19 * 18 * 17 = 116280
anonymous
  • anonymous
thanks damdam
anonymous
  • anonymous
thanks blexting

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