document.write( "Question 1200754: Find the probability that when a couple has two children, at least one of them is a boy. (Assume that boys and girls are equally likely.) \n" ); document.write( "

Algebra.Com's Answer #834958 by ikleyn(52817) $\"\"$ $\"About$

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document.write( "The opposite (the complementary) event is \"no one of two children is a boy\",\r\n" );
document.write( "i.e. both children are girl.\r\n" );
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document.write( "For this complementary event, the probability is   = .\r\n" );
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document.write( "Hence, for the original event under the problem's question the probability is   = .    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "You can come to the same answer by writing and counting the events in the space of events\r
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document.write( "    Girl Girl\r\n" );
document.write( "    Boy  Girl\r\n" );
document.write( "    Girl Boy\r\n" );
document.write( "    Boy  Boy\r\n" );
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document.write( "In this table, all possible configurations are listed, and they all are equally likely.\r\n" );
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document.write( "The configurations that satisfy the problem, are ## 2, 3 and 4  of the table, \r\n" );
document.write( "giving the answer regarding the probability.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved and fully explained in two ways, for your better understanding.\r
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