document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1126608>Question 1126608</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A bag contains three white balls numbered 2, 4,6, and flour black balls numbered 1,3,5 and 7, two balls are drawn without replacement.<BR>\n" );
document.write( "what is the probability the first ball is white given that the second ball is black?  </SPAN>\n" );
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document.write( "First ball drawn:  There are 7 balls in all; 3 are white.  P(white on first draw) = 3/7.<br><BR>\n" );
document.write( "Second ball drawn:  Now there are 6 balls in all; 4 are black.  P(black on second draw) = 4/6 = 2/3.<br><BR>\n" );
document.write( "P(white on first AND black on second) = P(white on first) * P(black on second) = (3/7)*(2/3) = 2/7. </SPAN>\n" );
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