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A certain organism begins as three cells. Each cell splits and becomes two cells at the end of two days. At the end of another two days, every cell of the organism splits and becomes two cells. This process lasts for a total of 8 days, and no cells die during this time. How many cells are there at the end of the 8th  day?

ant101  Jan 15, 2018
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3*2=6*2=12*2=24*2=48

There are 48 cells after 8 days.smiley

Guest Jan 15, 2018
 #2
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day 2    3 x 2 cells

day 4    3 x 2 x 2 cells

day 6    3 x 2 x 2 x 2 cells

day 8    3 x 2 x 2 x 2 x 2 cells = 48 cells

ElectricPavlov  Jan 15, 2018

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