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Topic | IQ Test |
CrestedTax 07/21/18 11:12:32 PM #67: | 2SweetforTurtle posted... 2/3 makes no sense. It says you picked from the same box, and already have a gold from the first pick. Therefore it CANNOT be the third box. It does make sense. There are a total of 3 gold balls. If you take 1 golden ball from a random box, the odds that you took it from the box with 2 gold balls is 2/3, while the odds of taking it from the one with just 1 gold ball is 1/3. Thus, once you take 1 golden ball you know that there is a 2/3 chance that it's from the box with 2 golds. ... Copied to Clipboard! |
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