Maths question of the day

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1973Blade

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We have been drawn at home for all six of the League Cup matches we have played since Chris Wilder became manager (including Sunderland). What are the chances of this happening?
 

Think you use the formula for permutations and combinations.
 
We have been drawn at home for all six of the League Cup matches we have played since Chris Wilder became manager (including Sunderland). What are the chances of this happening?

I’d say the odds of a home tie are about 50/50?

So now all you need to do is work out the odds of 6 consecutive home ties.

I’ve done the hard part for you, so all you need to do is finish off the calculation. You can use your calculator, but I want it in for Monday morning and DON’T forget to show your working out 😬
 
I’d say the odds of a home tie are about 50/50?

So now all you need to do is work out the odds of 6 consecutive home ties.

I’ve done the hard part for you, so all you need to do is finish off the calculation. You can use your calculator, but I want it in for Monday morning and DON’T forget to show your working out 😬
It was my quiz question of the day which KiwiBlade answered correctly. I think so anyway, maths was never my strong point 😂
 
Just for the geeks out there why don’t you work out the odds of our ball being picked at the point it was from a bag of 32 say or however many were in when we were drawn then of it being home as well?
Enjoy I’ll be in the corner having a pint
 

We have been drawn at home for all six of the League Cup matches we have played since Chris Wilder became manager (including Sunderland). What are the chances of this happening?

So many errors in this thread.

We would have to include the probability that Wilder would become Sheffield United manager AND the odds that we would progress past the first round such that we would be in the draw six times.
 
Just for the geeks out there why don’t you work out the odds of our ball being picked at the point it was from a bag of 32 say or however many were in when we were drawn then of it being home as well?
Enjoy I’ll be in the corner having a pint

Well, there are 32 balls, so it's a 1/32 chance of us being pulled out in any position ( we happened to be 9th out of the hat based on the website). If we assume that we don't know that every odd number selection will be at home (which ofcourse it will) then there is a 1/2 chance of us being at home also.

Therefore, the chance of being out 9th in the hat and then at home would be 1/2 x 1/32, which is 1/64.

You're welcome.
 
The odds of us being drawn at home 6 ties in a row is improbable considering the final is at wembley
 
Well, there are 32 balls, so it's a 1/32 chance of us being pulled out in any position ( we happened to be 9th out of the hat based on the website). If we assume that we don't know that every odd number selection will be at home (which ofcourse it will) then there is a 1/2 chance of us being at home also.

Therefore, the chance of being out 9th in the hat and then at home would be 1/2 x 1/32, which is 1/64.

You're welcome.
But that changes every time balls are pulled out and it’s not us
 
Well, there are 32 balls, so it's a 1/32 chance of us being pulled out in any position ( we happened to be 9th out of the hat based on the website). If we assume that we don't know that every odd number selection will be at home (which ofcourse it will) then there is a 1/2 chance of us being at home also.

Therefore, the chance of being out 9th in the hat and then at home would be 1/2 x 1/32, which is 1/64.

You're welcome.
Aaahh, but what about when they do that, 'give them a good swirl' thing half way through?
The ball that would've been next out (assuming the ball-puller has the same ball-pulling action each time) now has a chance of NOT being in the position as before said 'ball-swirling' I'm not sure what the odds of all the balls settling back in the same positions are though. Anyone know?! :)
 
Work it out in 'two's complement form".
Then you have your answer.
🤪
 
Did I mention I've got two Degrees in Statistics?
Drawing balls from a bag is not truly random, only quasi random. The chances of a home draw in any round are not exactly evens.....
Sorry to disappoint
I'm guessing you didn't go for the third degree because it would have been too torturous? 🤔
 
Just when I've got my head round Monty Hall you come up with this.

Go on then, why?
The "balls" will not be uniformly spherical, or the same weight. The fact that different numbers are carved into them will impact on weight & sphericalicity (made up word). It's negligible, but not exactly random. Go to extremes - one is a pea, one a golf ball, one a tennis ball, one a football, one a medicine ball & one is the moon. No way is that draw random....
 
The "balls" will not be uniformly spherical, or the same weight. The fact that different numbers are carved into them will impact on weight & sphericalicity (made up word). It's negligible, but not exactly random. Go to extremes - one is a pea, one a golf ball, one a tennis ball, one a football, one a medicine ball & one is the moon. No way is that draw random....
You gonna need a big there fella.
 

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