Posted by **Matt** on Monday, October 1, 2007 at 4:59pm.

Four red balls and two white balls are placed in a jar. One ball is randomly removed and replaced with a ball of the other color. The jar is then shaken, and one ball is randomly selected. What is the probability that this ball is red? Express your answer as a common fraction.

- Calculus -
**Count Iblis**, Monday, October 1, 2007 at 5:17pm
11/18

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