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January 30, 2015

January 30, 2015

Posted by **....** on Wednesday, May 25, 2011 at 2:16am.

- maths.. -
**drwls**, Wednesday, May 25, 2011 at 4:51amUse one of the methods described here:

http://easycalculation.com/what-is-hcf.php

198 = 99*2 = 2*3^2*11

126 = 2*3^2*7

240 = 15*16 = 2^4*3*5

The HCF is 2*3 = 6

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