Petra wants to borrow her dad’s car on Saturday, but so does her brother Alec. They decide to play Rock Paper Scissors to settle the dispute. Petra decides to go with Rock. What is the probability that she will win the car on the first trial? Assuming Petra continues with rock, how likely is Petra to win the car if she and Alec play until a winner is declared?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 34T
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 Petra wants to borrow her dad’s car on Saturday, but so does her brother Alec. They decide to play Rock Paper Scissors to settle the dispute. Petra decides to go with Rock. 

 What is the probability that she will win the car on the first trial?

Assuming Petra continues with rock, how likely is Petra to win the car if she and Alec play until a winner is declared?

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