Probability question involving finding gain or loss of a game

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Discussion Overview

The discussion revolves around a probability question related to calculating the gain or loss in a game. Participants are exploring different approaches to arrive at a solution, including specific calculations and interpretations of the problem.

Discussion Character

  • Debate/contested

Main Points Raised

  • Some participants attempted to use the formula $\frac{1}{13}$ x 30 + $\frac{12}{13}$ x $\frac{47}{51}$ x -10, but reported that it did not yield the correct result.
  • Another participant asserts that the correct answer is 2/9 p, questioning the validity of the previous calculations.
  • There is a mention of the problem being a past exam question, with one participant indicating they have the answer but are unsure of the solution process.

Areas of Agreement / Disagreement

Participants express disagreement regarding the correctness of the initial calculations and the identification of the right answer, with no consensus reached on the solution method.

Contextual Notes

Some assumptions about the problem and the definitions of variables may be missing, which could affect the interpretations and calculations presented.

Milly
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I tried using $\frac{1}{13}$ x 30 + $\frac{12}{13}$ x $\frac{47}{51}$ x -10 but it didnt work.
 

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Milly said:
I tried using $\frac{1}{13}$ x 30 + $\frac{12}{13}$ x $\frac{47}{51}$ x -10 but it didnt work.

Hi Milly! (Smile)

I believe you already have the right answer.
What makes you say that it doesn't work?
 
It is not the right answer. The right answer is 2/9 p
 
Milly said:
It is not the right answer. The right answer is 2/9 p

How do you know what the right answer is?
 
This is actually a past exam question. I got the answer but I don't know how to solve it.
 

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