document.write( "Question 1026170: An urn contains 5 red balls and 3 green balls. A ball is drawn randomly and 6 more of the same color are added to the urn. Then another ball is drawn. Let R1= event ball # is red. G1= even the ball # is green. Find Pr(R1|R2) \n" ); document.write( "
Algebra.Com's Answer #642157 by robertb(5830)\"\" \"About 
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P(R1|R2) = P(R1∩R2)/P(R2)\r
\n" ); document.write( "\n" ); document.write( "=P(R1∩R2)/(P(R1∩R2)+P(G1∩R2)) = \"%2850%2F104%29%2F%2850%2F104%2B15%2F104%29+=+50%2F65+=+10%2F13\"\r
\n" ); document.write( "\n" ); document.write( "Note that P(R1∩R2) = P(R2|R1)*P(R1) = \"%285%2F8%29%2A%2810%2F13%29+=+50%2F104\"\r
\n" ); document.write( "\n" ); document.write( "and P(G1∩R2) = P(R2|G1)*P(G1) = \"%283%2F8%29%2A%285%2F13%29+=+15%2F104\".
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