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January 31, 2015

January 31, 2015

Posted by **Kay** on Thursday, March 3, 2011 at 12:14am.

- Math -
**Reiny**, Thursday, March 3, 2011 at 8:38amafter we know that a blue one was picked, there are 21 blues left out of the remaining 49 marbles but still 28 reds, so

prob(next one red) = 28/49

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