document.write( "Question 435571: A family has three children. What is the probability that the first is a boy given that one is a girl? \n" ); document.write( "
Algebra.Com's Answer #301426 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\r \n" ); document.write( "\n" ); document.write( "There are 7 sample points where there is at least 1 girl. Of these seven , there are 3 elements where the first child is a boy. Hence the probability that the first is a boy given that one is a girl is 3/7. \n" ); document.write( " |