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February 28, 2015

February 28, 2015

Posted by **sean** on Wednesday, October 3, 2012 at 8:48am.

- math -
**Steve**, Wednesday, October 3, 2012 at 9:59am6 = 2*3

10 = 2*5

14 = 2*7

LCM(6,10,14) = 2*3*5*7 = 210

so, every 210 seconds they will blink at the same time

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