document.write( "Question 1028539: In a family, if the probability of having a boy or girl is equal;and there are three children, what is the probability of having at least a girl? \n" ); document.write( "

Algebra.Com's Answer #643654 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
Find the probability of all boys and then use the complement.
\n" ); document.write( " $\"P%28BBB%29=%281%2F2%29%281%2F2%29%281%2F2%29\"$
\n" ); document.write( " $\"P%28BBB%29=1%2F8\"$
\n" ); document.write( "So,
\n" ); document.write( " $\"P=1-P%28BBB%29\"$
\n" ); document.write( " $\"P=1-1%2F8\"$
\n" ); document.write( " $\"P=7%2F8\"$
\n" ); document.write( " \n" ); document.write( "

\n" );