Concept explainers
To calculate:probability that you and your friends win all four prizes

Answer to Problem 19CT
Explanation of Solution
Given information:
Calculation:Let event A represent selecting you and your friends at first place from 30 guests. Then the probability of selecting you and your friend at first place is
Let event B represent selecting you and your friends at second place from 30 guests. Then the probability of selecting you and your friend at second place is
Let event C represent selecting you and your friends at third place from 30 guests. Then the probability of selecting you and your friend at third place is
Let event D represent selecting you and your friends at fourth place from 30 guests. Then the probability of selecting you and your friend at fourth place is
So, the probability that you and your friends win all four prizes is
Chapter 9 Solutions
EBK PRECALCULUS W/LIMITS
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