document.write( "Question 1040686: Find the cardinal number of each of the following sets.
\n" ); document.write( "a.​ {100​, 101​, 102​, 103​,...120​}
\n" ); document.write( "c.​ {x|x=k^2​, k=​1, ​2, ​3,...67​}
\n" ); document.write( "b.​ { 100, 102, 104,...300​}
\n" ); document.write( "d.​ {(1, 2), ​(100​, 101​), ​(0, 104​)} \n" ); document.write( "
Algebra.Com's Answer #655577 by ikleyn(52788)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "      Cardinal number of a finite set is the number of elements in the set.\r
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document.write( "a.  ​ {100​, 101​, 102​, 103​,...120​}      This set contains 21 element. --->  The cardinal number is 21.\r\n" );
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document.write( "c.  ​ {x|x=k^2​, k=​1, ​2, ​3,...67​}       This set contains 67 elements. --->  The cardinal number is . . . what? \r\n" );
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document.write( "b.  ​ { 100, 102, 104,...300​}          This set contains 101 elements. --->  The cardinal number is . . . what? \r\n" );
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document.write( "d.  ​ {(1, 2), ​(100​, 101​), ​(0, 104​)}   There are 4 (four) elements in this set. Hence, the cardinal number is 4.\r\n" );
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document.write( "    (the elements of this set are pairs of numbers)\r\n" );
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