document.write( "Question 1143173: Which term of the AP: 21, 42, 63, 84,... is 210?
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Algebra.Com's Answer #763948 by math_helper(2461) $\"\"$ $\"About$

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document.write( "21, 42, 63, 84, ...,  210\r
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document.write( "Divide each element by 21, that should immediately give you the answer, as the divided AP will be 1, 2, 3, ... ,  N.\r
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