document.write( "Question 1187672: What is the probability that at least 2 people in a group of 8 people have the same birthdate? (Assume every year has exactly 365 days - i.e., there is no Leap Day.)
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Algebra.Com's Answer #818685 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "This probability is the COMPLEMENT to the probability that ALL 8 people have DIFFERENT birthdays.\r\n" );
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document.write( "The probability that 8 people have different birthdays is\r\n" );
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document.write( "    Q =  = \r\n" );
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document.write( "             //  (the product of 7 (seven)  multipliers) = 0.925665...\r\n" );
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document.write( "Thus the probability under the problem's question is\r\n" );
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document.write( "    P = 1 - Q = 1 -  = 1 - 0.925665... = 0.0743  (rounded).    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lesson\r
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