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The number of bacteria in a Petri dish doubles every 20 minutes. If there is are 2 bacteria to begin with, how many will be in the Petri dish after 2 hours?

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11 Plus (11+) Maths Practice Test: Solving Problems (Very Easy)

11 Plus (11+) Maths Practice Test: Solving Problems (Easy)


The number of bacteria in a Petri dish doubles every 20 minutes. If there is are 2 bacteria to begin with, how many will be in the Petri dish after 2 hours?





 
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