anonymous
  • anonymous
A company is creating three new divisions in three different countries. Seven managers are eligible to be appointed head of a division. How many different ordered ways could the three new heads be appointed?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
For this one, I ran a combin again.. but Im not sure.. combin (7,3) = 35 Im not sure if there is actually more to this.
anonymous
  • anonymous
is it actually a total of 9 divisions?
hartnn
  • hartnn
no, only 3 divisions, one division per country choose 3 managers from 7, combin(7,3) is correct :)

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More answers

anonymous
  • anonymous
THANKS again !
hartnn
  • hartnn
wait, does the order matter here?
anonymous
  • anonymous
ah I dont think so...
anonymous
  • anonymous
I did think about that..
anonymous
  • anonymous
so I should always ask that I suppose.
rvc
  • rvc
no i dont think order matters
hartnn
  • hartnn
A in country 1 , B in country 2, C in country 3 B in country 1, A in country 2 , C in country 3 these both are different, right?????
rvc
  • rvc
nope order doesnt matter in this case
anonymous
  • anonymous
Well I do have another question similar.. "Suppose 15 students are lined up outside a classroom waiting to get in. You want to determine how many different ordered ways they can enter the classroom, one at a time. Check all of the correct methods you could use to determine how many different ordered ways they can enter the classroom." This looks like order matters.,
anonymous
  • anonymous
or wait.. it does ask.. "how many different ordered ways"
anonymous
  • anonymous
so order does matter hey.
hartnn
  • hartnn
exactly my point ABC, BCA, ACB, BAC.... are all different
rvc
  • rvc
hmm read the question twice
anonymous
  • anonymous
ok, so it's 210 .. permut(7,3)
hartnn
  • hartnn
correct
rvc
  • rvc
They just want the numbers of ways order is not mentioned
anonymous
  • anonymous
are you sure RVC? Quote "How many different ordered ways could the three new heads be appointed?"
hartnn
  • hartnn
for the 2nd one, yes order matters. so toal how many ways?
anonymous
  • anonymous
are there other methods other than permutation to find how many different ordered ways? or permutation the only way? say given multiplication rule, or factorials.. and combos.
anonymous
  • anonymous
this looks like a factorial would also give us an answer.. being that they are ALL going in.
hartnn
  • hartnn
correct
rvc
  • rvc
15 students can enter in 15different ways
anonymous
  • anonymous
it looks like 15! would give us the answer too
rvc
  • rvc
correct :)
hartnn
  • hartnn
15! is correct. paermuation is just one of the many ways. like you can use permutation for 2nd problem, permute (15,15) = 15!
rvc
  • rvc
all d best :)
anonymous
  • anonymous
thanks guys.. I think I'm good then.

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