A pet shop sells dogs, cats and piranhas.  There are 24 animals for sale, out of which 10 are cats, and the remainder is equally split between dogs and piranhas. If an animal is chosen at random by the first customer who walks in, find the probability of choosing: 1] a dog 2] a cat 3] If the choice is a piranha and a young worker reaches into the tank where the piranhas are kept, how likely is it the worker will be seriously harmed?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A pet shop sells dogs, cats and piranhas.  There are 24 animals for sale, out of which 10 are cats, and the remainder is equally split between dogs and piranhas. If an animal is chosen at random by the first customer who walks in, find the probability of choosing:

1] a dog

2] a cat

3] If the choice is a piranha and a young worker reaches into the tank where the piranhas are kept, how likely is it the worker will be seriously harmed? 

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