Bacteria colony on Petri dish puzzle

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A Petri dish hosts a healthy colony of bacteria. Once a minute every bacterium divides into two. The colony was founded by a single cell at noon. At exactly 12:43 (43 minutes later) the Petri dish was half full.
At what time will the dish be full?

bacteria on Petri dish puzzle

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    the Petri dish will be  full after one minute that is exactly  at 12:44 (44 minutes later)

    PRATAP Guru Answered on 11th February 2016.
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