document.write( "Question 702546: fifteen people are at a party. if each person shakes hands with everyone else(just once)how many handshakes are there in all? \n" ); document.write( "

Algebra.Com's Answer #433063 by KMST(5328) $\"\"$ $\"About$

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From the points of view of the 15 people, each one shaking 14 hands, there would be $\"15%2A14\"$ shakes.
\n" ); document.write( "However, that would count each handshake twice, one from the point of view of each shaker,
\n" ); document.write( "so there are $\"15%2A14%2F2=105\"$ shakes. \n" ); document.write( "

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