document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1113562>Question 1113562</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains 20 tennis balls, of which four are defective. If two balls are selected at<BR>\n" );
document.write( "random from the bag, what is the probability that both are defective? </SPAN>\n" );
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document.write( "P(both are defective) = P(1st is defective)*P(2nd is also defective)\r<BR>\n" );
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document.write( "Assuming the selections are made without replacement:<BR>\n" );
document.write( " P(both are defective) = (4/20)(3/19) = 12/380 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+highlight%283%2F95%29+ ALIGN=MIDDLE  ALT=\"+highlight%283%2F95%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >  or approx 0.03158.\r<BR>\n" );
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