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 one year ago
In a bag there are 2 black and 4 white identical rings. Two rings are drawn from the bag at random. Find the probability that only one of them is white.
 one year ago
In a bag there are 2 black and 4 white identical rings. Two rings are drawn from the bag at random. Find the probability that only one of them is white.

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satellite73
 one year ago
Best ResponseYou've already chosen the best response.2first one is black AND second one is white OR first one is white AND second one is black is one way to proceed

satellite73
 one year ago
Best ResponseYou've already chosen the best response.2\[\frac{2}{6}\times \frac{4}{5}+\frac{4}{6}\times \frac{1}{5}\] is one way there are others

satellite73
 one year ago
Best ResponseYou've already chosen the best response.2for example you could compute \[\frac{\binom{4}{1}\times \binom{2}{1}}{\binom{6}{2}}\]

satellite73
 one year ago
Best ResponseYou've already chosen the best response.2second way is probably snappier, gives \[\frac{8}{15}\] right away

klimenkov
 one year ago
Best ResponseYou've already chosen the best response.0@satellite73 May be there is a mistake in your second post? Can you please explain why does the second way give the right result?
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