document.write( "Question 784648: Let A = {1, 2, 3, 4, 5, 6, 7}. How many three element subsets of A contain the element 1 \n" ); document.write( "
Algebra.Com's Answer #477186 by stanbon(75887)\"\" \"About 
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Let A = {1, 2, 3, 4, 5, 6, 7}. How many three element
\n" ); document.write( "subsets of A contain the element 1 ?
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\n" ); document.write( "# of ways to pick 2 other elments: 6C2 = 15
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\n" ); document.write( "Answer: 15 subsets.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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