document.write( "Question 1152322: List the number of these subsets
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List the number of these subsets
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\n" ); document.write( "B={a,b,c}
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document.write( "I will answer:\r
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document.write( "Compute the number of subsets for these sets:
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document.write( "A={1,2,3,4}
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document.write( "B={a,b,c}
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document.write( "For a set of n elements, there are   subsets.  This comes from having a choice to include or exclude each element in any given subset.
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document.write( "Set A has four elements so there are   subsets.  \r
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document.write( "[ For the number of proper subsets, the answer is  because we exclude the one case of choosing every element. ]\r
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document.write( "Set B has three elements, apply the same idea.  You may want to list out the subsets themselves to prove to yourself there are  subsets. \n" );
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