A) \[64\times {{10}^{7}}\]
B) \[32\times {{10}^{7}}\]
C) \[6\times {{10}^{7}}\]
D) \[40\times {{10}^{7}}\]
Correct Answer: A
Solution :
Generation time is 40 minutes. \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\] Number of divisions is \[\frac{240}{40}=6\] Number of bacteria are = \[{{2}^{n}}={{2}^{6}}\times {{10}^{7}}\] \[=64\times {{10}^{7}}\]
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