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Jim and Renee will play one game of Rock, Paper, Scissors

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Jim and Renee will play one game of Rock, Paper, Scissors

by BTGModeratorVI » Fri Apr 10, 2020 8:13 am

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Jim and Renee will play one game of Rock, Paper, Scissors. In this game, each will select and show a hand sign for one of the three items. Rock beats Scissors, Scissors beat Paper, and Paper beats Rock. Assuming that both Jim and Renee have an equal chance of choosing any one of the hand signs, what is the probability that Jim will win?

A. 5/6
B. 2/3
C. 1/2
D. 5/12
E. 1/3

Answer: E
Source: Manhattan prep
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Re: Jim and Renee will play one game of Rock, Paper, Scissors

by Brent@GMATPrepNow » Sat Apr 11, 2020 6:26 am

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BTGModeratorVI wrote: ↑
Fri Apr 10, 2020 8:13 am
 Jim and Renee will play one game of Rock, Paper, Scissors. In this game, each will select and show a hand sign for one of the three items. Rock beats Scissors, Scissors beat Paper, and Paper beats Rock. Assuming that both Jim and Renee have an equal chance of choosing any one of the hand signs, what is the probability that Jim will win?

A. 5/6
B. 2/3
C. 1/2
D. 5/12
E. 1/3

Answer: E
Source: Manhattan prep
Here's another way to look at it.
Let's say that Renee already knows what she is going to select. So, that part is done.

At this point, what are the possible outcomes?
a) Jim selects the one sign that allows him to win
b) Jim selects the one sign that allows Renee to win
c) Jim selects the one sign that results in a tie.

Since each of these outcomes is equally likely, the probability of each outcome is 1/3
So, the probability that Jim wins is 1/3

Answer: E

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
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Re: Jim and Renee will play one game of Rock, Paper, Scissors

by deloitte247 » Sun Apr 12, 2020 5:08 am

Timer

00:00

Your Answer

A

B

C

D

E

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Assuming that both Jim and Renee have an equal chance of choosing any one of the hand signs, what is the probability that Jim will win?

Possible outcomes of this games are =>
-> Jim winning and Renee losing
-> Jim losing and Renee winning
->Jim and Renee draw

The chance of Jim winning this game is 1 out of 3

Answer = 1/3

Answer = E
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