document.write( "Question 1098697: In the certain city, 43% of all children born are boys and 57% are girls.
\n" ); document.write( "What is the probability that the next 3 children born will be all girls? \r
\n" ); document.write( "\n" ); document.write( "What is the probability that out of the next 4 children born that none will be girls? \r
\n" ); document.write( "\n" ); document.write( "What is the probability that out of the next 5 children born at least one is a girl? \n" ); document.write( "

Algebra.Com's Answer #713107 by ikleyn(52795) $\"\"$ $\"About$

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\n" ); document.write( "In the certain city, 43% of all children born are boys and 57% are girls.\r
\n" ); document.write( "\n" ); document.write( "What is the probability that the next 3 children born will be all girls? \r
\n" ); document.write( "\n" ); document.write( "What is the probability that out of the next 4 children born that none will be girls? \r
\n" ); document.write( "\n" ); document.write( "What is the probability that out of the next 5 children born at least one is a girl?
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\n" ); document.write( "\n" ); document.write( "Actually, the first phrase of this post is not relevant to the others.\r
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\n" ); document.write( "\n" ); document.write( "The basic fact is that the probability of the birth of a boy or a girl is close to 1/2,
\n" ); document.write( "and in school math problems like this the value of 0.5 for the probability is used.\r
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\n" ); document.write( "\n" ); document.write( "For the answer, it doesn't matter what is the current ratio of the numbers of boys and girls in a city.\r
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document.write( "    1)  What is the probability that the next 3 children born will be all girls?     \r\n" );
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document.write( "            It is    =  = .\r\n" );
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document.write( "    2)  What is the probability that out of the next 4 children born that none will be girls?       \r\n" );
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document.write( "            It is    =  = .\r\n" );
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document.write( "    3)  What is the probability that out of the next 5 children born at least one is a girl?           \r\n" );
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document.write( "            It is \"the complement\" to the probability that out of the next 5 children born all are boys. \r\n" );
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document.write( "            Thus the probability under the question is equal to  1 -  = .\r\n" );
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