document.write( "Question 1049660: How many common multiples of 14 and 21 are there between 200 and 400? \n" ); document.write( "

Algebra.Com's Answer #665254 by ikleyn(52788) $\"\"$ $\"About$

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\n" ); document.write( "How many common multiples of 14 and 21 are there between 200 and 400?
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document.write( "Common multiples of 14 and 21 are those and only those integer numbers that are multiple of LCM(14,21) = 42.\r\n" );
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document.write( "There are not so many multiples of 42 between 200 and 400. \r\n" );
document.write( "They are 210, 252, 294, 336 and 378.\r\n" );
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