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Author anyone good at maths
will_doyle
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20th Jan 12 at 13:53   View User's Profile U2U Member Reply With Quote

what are the odds of you having £100,000 and £250,000 as the 2 last boxes on deal or no deal

one of them being your box you chose

there are 22 boxes

and before the game you have to chose randomly one of the boxes to be your box
Russ
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20th Jan 12 at 13:54   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by will_doyle
what are the odds of you having £100,000 and £250,000 as the 2 last boxes on deal or no deal

one of them being your box you chose

there are 22 boxes

and before the game you have to chose randomly one of the boxes to be your box
7 to the power of 4
adiohead
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20th Jan 12 at 13:57   View User's Profile U2U Member Reply With Quote

u2u Pow
RichR
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20th Jan 12 at 14:29   View Garage View User's Profile U2U Member Reply With Quote

watch 21

initially its one in eleven that you would have one of the top two prizes at the start of the game but it all goes into statistics if you're offered a swap at the end and you're at better odds to swap than to stick

[Edited on 20-01-2012 by LiVe LeE]
Ian
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20th Jan 12 at 14:48   View Garage View User's Profile U2U Member Reply With Quote

Multiply the individual probabilities. Use the likelihood of not choosing the box you want to end up with rather than the odds of finding box 1 or box 2 or box 3 etc because it doesn't matter which of the non target boxes you find. Basically its a calculation to repeatedly not find those you mention.
RichR
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20th Jan 12 at 14:56   View Garage View User's Profile U2U Member Reply With Quote

Ian's right, I critically missed out "as the 2 last boxes", I was calculating for chosing one of the two boxes at the start. The probabilities to have them at the end will be signifcantly longer
Cardiac Kid
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20th Jan 12 at 15:39   View User's Profile U2U Member Reply With Quote

1/44?
Cardiac Kid
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20th Jan 12 at 15:41   View User's Profile U2U Member Reply With Quote

Scrap that actually.
RichR
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20th Jan 12 at 15:53   View Garage View User's Profile U2U Member Reply With Quote

Also worth thinking about is that the mean average of the boxes is £25,700 (ish) and only 5 boxes contain above this amount; the odds are stacked against you winning big so if you play it as a game of chance, you may as well just pick blindly and you win what you win.

Any offer over £26,000 means you're more likely to be above what's in your box anyway so either play for an offer over that or play to the end with the intention of only ever having what is in your box.

Before round one you have a 2 in 22 chance of picking either £100k or £250k, You then have to look at the probability of picking one of those two numbers in the enxt rounds as opposed to looking at NOT picking them; in round one, you have a 2 in 21 chance of choosing the two big prizes; if they're still in play after this round, the odds of choosing them fall to 2 in 20, then 2 in 19, 2 in 18 and so on. As the game progresses you have a higher and higher chance of losing one of the top prizes.

What I can't remember is the way you link probabilities from one round into the next but it'll be an much higher figure of actually still having the last two prizes as you go into the last round.

However, if you're given the chance to swap in the last round, you're much better to swap than not because of something called the 'Monty Hall Paradox'
spencer88
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20th Jan 12 at 16:10   View User's Profile U2U Member Reply With Quote

32%
Russ
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20th Jan 12 at 16:31   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by LiVe LeE
Also worth thinking about is that the mean average of the boxes is £25,700 (ish) and only 5 boxes contain above this amount; the odds are stacked against you winning big so if you play it as a game of chance, you may as well just pick blindly and you win what you win.

Any offer over £26,000 means you're more likely to be above what's in your box anyway so either play for an offer over that or play to the end with the intention of only ever having what is in your box.

Before round one you have a 2 in 22 chance of picking either £100k or £250k, You then have to look at the probability of picking one of those two numbers in the enxt rounds as opposed to looking at NOT picking them; in round one, you have a 2 in 21 chance of choosing the two big prizes; if they're still in play after this round, the odds of choosing them fall to 2 in 20, then 2 in 19, 2 in 18 and so on. As the game progresses you have a higher and higher chance of losing one of the top prizes.

What I can't remember is the way you link probabilities from one round into the next but it'll be an much higher figure of actually still having the last two prizes as you go into the last round.

However, if you're given the chance to swap in the last round, you're much better to swap than not because of something called the 'Monty Hall Paradox'
ok Kevin
RichR
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20th Jan 12 at 16:48   View Garage View User's Profile U2U Member Reply With Quote

I've spent most of the afternoon doing this and not work - shit will hit the fan Monday
sc0ott
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20th Jan 12 at 16:58   View User's Profile U2U Member Reply With Quote

Whats the chances of you getting approved for the show?
3CorsaMeal
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20th Jan 12 at 18:06   View User's Profile U2U Member Reply With Quote

this might help example it.

http://www.pnas.org/content/103/19/7414/F4.large.jpg

Its basically a infinatic equation and the answer is anwhere from 1 in 1 to 1 in 100,000,000,000

X= Anywhere between 1 & 100,000,000,000


[Edited on 20-01-2012 by 3CorsaMeal]

[Edited on 21-01-2012 by Ian]
Steve
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20th Jan 12 at 18:08   View Garage View User's Profile U2U Member Reply With Quote

Hammer
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20th Jan 12 at 18:12   View User's Profile U2U Member Reply With Quote

I'm good at maffs.
Russ
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20th Jan 12 at 18:15   View User's Profile U2U Member Reply With Quote

would love to be a weirdo like pow and just look at that and know the answer is 797,233,340
spencer88
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20th Jan 12 at 18:16   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Russ
would love to be a weirdo like pow and just look at that and know the answer is 797,233,340


How would anyone ask Pow? All on restricted view of his profile.
Russ
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20th Jan 12 at 18:18   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Pow
answer is 797,233,{you are not privileged to see this part of the answer due to profile restrictions}
Steve
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20th Jan 12 at 18:19   View Garage View User's Profile U2U Member Reply With Quote

preffered pow when he was single tbh
Russ
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20th Jan 12 at 18:22   View User's Profile U2U Member Reply With Quote

so did Lauren Pussey from what i've heard
spencer88
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20th Jan 12 at 18:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Russ
so did Lauren Pussey from what i've heard


Cardiac Kid
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21st Jan 12 at 16:05   View User's Profile U2U Member Reply With Quote

1 in 231.
DC90
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21st Jan 12 at 17:15   View User's Profile U2U Member Reply With Quote

You're not going on deal or no deal are you?
Ian
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21st Jan 12 at 17:26   View Garage View User's Profile U2U Member Reply With Quote

Fairly sure this isn't a Monty Hall.

Decide on the question as well, winning "big" or winning over the mean are different calcuations.

Its 20-odd discrete events, multiply the odds for each one.

Think its got more with a pool balls in a bag problem than anything else you've mentioned.

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