document.write( "Question 435553: Hi!\r
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document.write( " I have a probability question: A family has three children. What is the probability that one is boy given that one is a girl?\r
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document.write( "Thank you for your help! \n" );
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Algebra.Com's Answer #301421 by robertb(5830) You can put this solution on YOUR website! The following list gives the sample space (assuming no multiple births!) \n" ); document.write( "BBB \n" ); document.write( "BBG \n" ); document.write( "BGB \n" ); document.write( "BGG \n" ); document.write( "GBB \n" ); document.write( "GBG \n" ); document.write( "GGB \n" ); document.write( "GGG \n" ); document.write( " \n" ); document.write( "There are 7 sample points where there is at least 1 girl. Of these seven , there are 6 elements where there is at least 1 boy. Hence the probability that one is boy given that one is a girl is 6/7. \n" ); document.write( " |