# Exam P Practice Problem 72 – Risk Categories of Insured Drivers

**Both Problem 72-A and Problem 72-B use the following information.**

A large pool of insured drivers consists of three distinct risk categories – low risk drivers, medium risk drivers and high risk drivers. The following table has more information about these insured drivers.

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**Problem 72-A**

Three insured drivers are randomly selected from this large pool of insured drivers.

What is the probability that all three insured drivers are drawn from different risk categories?

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**Problem 72-B**

Four insured drivers are randomly selected from this large pool of insured drivers.

What is the probability that all three risk categories are represented in these four insured drivers?

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