document.write( "Question 1049664: A={4,5,6,7,8,10,11,12,}
\n" ); document.write( " How many subsets does A have
\n" ); document.write( " How many proper subsets does A have \n" ); document.write( "
Algebra.Com's Answer #665243 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "A={4,5,6,7,8,10,11,12,}\r
\n" ); document.write( "\n" ); document.write( "How many subsets does A have
\n" ); document.write( "{} | {4} | {5} | {6} | {7} | {8} | {10} | {11} | {12} | {4, 5} | {4, 6} | {4, 7} | {4, 8} | {4, 10} | {4, 11} | {4, 12} | {5, 6} | {5, 7} | {5, 8} | {5, 10} | {5, 11} | {5, 12} | {6, 7} | {6, 8} | {6, 10} | {6, 11} | {6, 12} | {7, 8} | {7, 10} | {7, 11} | {7, 12} | {8, 10} | {8, 11} | {8, 12} | {10, 11} | {10, 12} | {11, 12} | {4, 5, 6} | {4, 5, 7} | {4, 5, 8} | ... (total: 256)\r
\n" ); document.write( "\n" ); document.write( "simply: \r
\n" ); document.write( "\n" ); document.write( "If a set contains ‘\"n\"’ elements, then the number of subsets of the set is \"2%5En+\"
\n" ); document.write( "You are given the set consisting of \"8\" elements; so, its cardinal number is \"8\" and set has
\n" ); document.write( "\"2%5E8=256\"
\n" ); document.write( "subsets including the empty set {} and the set itself as a subset {4,5,6,7,8,10,11,12,}.\r
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\n" ); document.write( "\n" ); document.write( "How many proper subsets does A have\r
\n" ); document.write( "\n" ); document.write( "If a set contains ‘\"n\"’ elements, then the number of proper subsets of the set is \"2%5En+-+1\".\r
\n" ); document.write( "\n" ); document.write( "so, the number of proper subsets is \"2%5E8-1=255\"\r
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