document.write( "Question 1192007: Prove:
\n" );
document.write( "if 3 is not divisible by m * n, then 3 is not divisible by m and 3 is not divisible by n \n" );
document.write( "
Algebra.Com's Answer #823903 by ikleyn(52778)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Prove: \n" ); document.write( "if 3 is not divisible by m * n, then 3 is not divisible by m and 3 is not divisible by n \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " The posted statement is INCORRECT.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "One possible counter-example is m = 5, n = 1.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is true that 3 is not divisible by m*n = 5*1 = 5, in this case - - - so the premise is TRUE.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "But the \"then\" statement is FALSE: \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( " it is true that 3 is not divisible by 5, \r\n" ); document.write( "\r\n" ); document.write( " but it is FALSE that 3 is not divisible by 1.\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "This counter-example DISPROVE your statement in the post.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "---------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solved and DISPROVED. Answered and explained.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "/////////////\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "From the first glance on your post it is clear that it is like a sock turned inside out,\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "and the correct statement must be different - but in this case, I prefer do not discuss \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "my suspicions and instead disprove the wrong statement.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |