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Solve the following question given below:

Question: The average counting rate of a radioactive sample is 486 cpm (counts per minute).

Part A: Find the probability that in any given 10 s interval one gets less than 72 counts.

Part B: Is this the same as the probability of getting less than 72 x 6 = 432 counts in 60 s?

I need proficient help for the above question. Thanks in advance.

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