document.write( "Question 1020355: M={x|x€N and 5< X < 14}
\n" ); document.write( " How many subsets does M have?
\n" ); document.write( "How many proper subsets does M have?
\n" ); document.write( "

Algebra.Com's Answer #636267 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
If x is a natural number between 5 and 14, then x = 6, 7, 8, 9, 10, 11, 12, and 13, a total of eight numbers.
\n" ); document.write( "Thus, M has \"2%5E8\"=256 subsets, while it has \"2%5E8+-+1\" = 255 proper subsets.
\n" ); document.write( "
\n" );