(Answered) In 104 days 170 oil tankers arrive at a port for unloading

Statistics

In 104 days, 170 oil tankers arrive at a port for unloading. The tankers arrive randomly and independently. Probabilities are the same for every day of the week. A maximum of two oil tankers can be unloaded each day.

a) What is the probability that no oil tankers will arrive on Tuesday?

b) What is the probability that more than two will arrive on Friday? This will mean that not all can be unloaded on Friday, even if no oil tankers were left over from Thursday.

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