Question

In a laboratory test, it was found that a certain culture of bacteria develops in a favorable environment, doubling its population every 2 hours. The test started with a population of 100 bacteria. After six hours, it is estimated that the number of bacteria will be:

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start with 100 bacteria
population doubles every 2 hours
so, population after 2 hours = 2 x 100 = 200
population after next 2 hours (i.e. 4 hrs from start) = 2 x 200 = 400
population after next 2 hours (i.e. 6 hours from start) = 2 x 400 = 800
Answer : 800

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