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March 31, 2015

March 31, 2015

Posted by **Nicole** on Monday, January 10, 2011 at 2:26pm.

a) If the first ball is drawn and not replaced, what is the probability that two balls will be drawn of different colors?

b) If the first ball is drawn and then put back, what is the probability that two balls will be drawn of different colors?

- Math -
**Reiny**, Monday, January 10, 2011 at 2:49pmP(WP) = (2/9)(7/8) = 7/36

P(PW) = (7/9)(2/*) = 7/36

Prob of your event = 7/36+7/36 = 7/18

if ball is replaced,

Prob(your event) = 2(2/9)(7/9) = 28/81

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