document.write( "Question 610343: An urn contains seven red balls, four black balls, and six green balls. If two balls are selected at random without replacement from the urn, what is the probability that a red ball and a black ball will be selected? (Round your answer to three decimal places.) \n" ); document.write( "

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An urn contains seven red balls, four black balls, and six green balls. If two balls are selected at random without replacement from the urn, what is the probability that a red ball and a black ball will be selected? (Round your answer to three decimal places.)
\n" ); document.write( ".
\n" ); document.write( "total balls: 7+4+6 = 17
\n" ); document.write( "number of red balls: 7
\n" ); document.write( "number of black balls: 4
\n" ); document.write( ".
\n" ); document.write( "7/17 * 4/16
\n" ); document.write( "7/17 * 1/4
\n" ); document.write( "7/68
\n" ); document.write( "0.10294
\n" ); document.write( "10.294%
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