document.write( "Question 387816: Explai whether the set {2, 4, 6, 8, 10, 12, ...} is closed with respect to addition on whole numbers? \n" ); document.write( "
Algebra.Com's Answer #274157 by stanbon(75887)\"\" \"About 
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Closed because the sum of to positive even numbers
\n" ); document.write( "is a positive even number.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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