document.write( "Question 883373: (13-7)+(7-1)+(15-9)+(9-1)+(5-1)=30 \n" ); document.write( "

Algebra.Com's Answer #533480 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
An odd number of odd numbers cannot add to 30.
\n" ); document.write( "Only an even number of odd numbers can.
\n" ); document.write( "Odd+Odd=Even <--- First two odd numbers added
\n" ); document.write( "Odd+Odd=Even <--- Next two odd numbers added
\n" ); document.write( "Even+Even=Even <---- First four odd numbers added together
\n" ); document.write( "Odd+Even=Odd <---- Last odd number add to the first four total\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );