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.