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Zem
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christoph
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thearch
Christoph, it seems that your answer is not even an option.
BTW, my reasoning:
2 possibilities for gk
8c2 for position 1
6c2 for position 2
4c1 for position 3
which is= 3360
my answer is
D 3,360


why? 2c1=2 8c5=56 1=1 5c2=10 3c2=3 1=1 multiply all = 3360, is it ?
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thearch
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sorry, I miscalculated. :oops:
Happy to see different ways to approach the same problem :)
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christoph
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thearch
sorry, I miscalculated. :oops:
Happy to see different ways to approach the same problem :)
:)
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ritledge
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What does 8c1 mean? I see the #c# a lot in these forums on probability questions, but don't know what it refers to. Can someone please explain? thx
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thearch
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8c2 stands for 8!/(2!6!)
that is the general formula for combinations n!/(n-r!r!).
You can find more in various stickies posted at the top of the Math forum.
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Antmavel
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I found D doing 8P5/2!
Interesting...Honnestly, I have no idea what's the logic behind it :roll: :?:



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