MHB Probability question involving finding gain or loss of a game

AI Thread Summary
The discussion revolves around a probability question related to calculating the gain or loss in a game. A user attempted a calculation using the formula $\frac{1}{13}$ x 30 + $\frac{12}{13}$ x $\frac{47}{51}$ x -10 but found it incorrect. Another participant asserts that the correct answer is 2/9 p, questioning the validity of the initial calculation. The original poster confirms they have the answer but are unsure of the solving process. The conversation highlights confusion over the correct method to arrive at the solution.
Milly
Messages
21
Reaction score
0
I tried using $\frac{1}{13}$ x 30 + $\frac{12}{13}$ x $\frac{47}{51}$ x -10 but it didnt work.
 

Attachments

  • image.jpg
    image.jpg
    32.7 KB · Views: 91
Mathematics news on Phys.org
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.
 
Thread 'Video on imaginary numbers and some queries'

Thread 'Video on imaginary numbers and some queries'

Hi, I was watching the following video. I found some points confusing. Could you please help me to understand the gaps? Thanks, in advance! Question 1: Around 4:22, the video says the following. So for those mathematicians, negative numbers didn't exist. You could subtract, that is find the difference between two positive quantities, but you couldn't have a negative answer or negative coefficients. Mathematicians were so averse to negative numbers that there was no single quadratic...
View full post »
Thread 'Unit Circle Double Angle Derivations'

Thread 'Unit Circle Double Angle Derivations'

Here I made a terrible mistake of assuming this to be an equilateral triangle and set 2sinx=1 => x=pi/6. Although this did derive the double angle formulas it also led into a terrible mess trying to find all the combinations of sides. I must have been tired and just assumed 6x=180 and 2sinx=1. By that time, I was so mindset that I nearly scolded a person for even saying 90-x. I wonder if this is a case of biased observation that seeks to dis credit me like Jesus of Nazareth since in reality...
View full post »
Thread 'Imaginary Pythagoras'

Thread 'Imaginary Pythagoras'

I posted this in the Lame Math thread, but it's got me thinking. Is there any validity to this? Or is it really just a mathematical trick? Naively, I see that i2 + plus 12 does equal zero2. But does this have a meaning? I know one can treat the imaginary number line as just another axis like the reals, but does that mean this does represent a triangle in the complex plane with a hypotenuse of length zero? Ibix offered a rendering of the diagram using what I assume is matrix* notation...
View full post »

Similar threads

MHB -act.63 cost per game with season pass
Replies
2
Views
1K
I Calculating the inverse of a function involving the error function
Replies
3
Views
2K
I Method for finding a complex series?
Replies
10
Views
2K
A game of roulette and generating functions
Replies
3
Views
1K
B Which probability calculation is "more correct" in Baccarat games?
Replies
9
Views
5K
MHB Chloe's question via email about a p-value
Replies
1
Views
10K
MHB What Is the Probability Distribution for Drawing Spades Without Replacement?
Replies
5
Views
3K
I Can Angular Velocity Accurately Control Ragdoll Limbs in Game Physics?
Replies
6
Views
3K
MHB Help with Math Homework: Conditional Probability - 19/30
Replies
2
Views
2K
MHB What are the factors of -48 that result in a positive sum?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top