This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'A bacterium can divide every 20 minutes. Beginning with a single individual, how many bacteria will be there in the population if there is exponential growth for 3 hours: \nSelect and explain. \nA. 18, B. 440, C. 512, D. 1024', 'role': 'user'}, {'content': 'Answer: C \nExplanation: P = C (I + r)n\nWhere, P = Final value\nC Initial value\nr = fraction increase\nn = no. of times increase\nIn the given question, A bacterium can divide every 20 minutes and exponential growth is for 3 hours,\nThus, C = 1,\nAnd r = 1 (it doubles every time)\nn = 3 hours/20 minutes 9 times\nThus P = C (1 + = 1 (1 + 1)9 = 29 = 512\nOne Oilier Simple Way of Doing IT\n\nGiven information: A bacterium can divide every 20 minutes (3/hour)\nThus in 3 hours, it will total divide 3/hour x 3 hours = 9 times\nThus 9 times multiplication will successively yield 2, 4, 8, 16, 32, 64, 128, 256, 512 bacteria.\nSo at end of 9 hours, there will be 512 bacteria.', 'role': 'assistant'}]