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How to get all 2014 light bulbs on?

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On a circle there are 2014 light bulbs, 2 are ON, and 2012 are OFF. You can choose any bulb and change the neighbor's state from ON to OFF or from OFF to ON. Doing so, can we get all 2014 light bulbs on ? If yes, How?

posted Apr 22, 2014 by Salil Agrawal

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