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in Mathematics by (48.4k points)

In a certain colony of cancerous cells, each cell breaks into two new cells every hour. If there is a single productive cell at the start and this process continues for 9 hours, how many cells will the colony have at the end of 9 hours? It is known that the life of an individual cell is 20 hours. 

(a) 29 – 1 

(b) 210 

(c) 29 

(d) 210 – 1

1 Answer

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Best answer

Correct option (c) 29    

Explanation: 

Since, the problem says that the cell breaks into two new cells, it means that the original cell no longer exists. Hence, after 1 hour there would be 21 cells, after 2 hours there would be 22 cells and so on. After 9 hours there would be 29 cells. 

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