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simple mathematics/raffle question

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Old Jun 15, 2005 | 02:24 PM
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Default simple mathematics/raffle question

raffle tickets are being sold for $25 each. each person can buy up to 5 tickets. each ticket has a 1:4100 chance of winning. if you buy more than 1 ticket, then each ticket will be put in different pots.

my question is, does my chance of winning (you can only win once) increase if I buy 5 tickets vs 1 ? or are my chances still 1/4100 = 5/20500 even if I buy 5?
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Old Jun 15, 2005 | 02:28 PM
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how many tickets per pot? if it's 4100 tickets per pot then the probability is just 1/4100 since one pot doesn't affect the other.
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Old Jun 15, 2005 | 02:35 PM
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actually i'm on crack and withdraw the above premature comment. thought about it some more and i'm full of shit. i think your chances of winning will improve slightly with each pot because the winner of the previous pots, if they have a ticket in subsequent pots, will be disqualified from winning again. so yeah i have zero clue.
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Old Jun 16, 2005 | 10:38 AM
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Edited
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Old Jun 16, 2005 | 01:44 PM
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Needs more info.

So if everyone were to buy just one ticket would they all go into the same pot or are they dispersed evenly?

When they draw do they select the pot at random? You said that you can only win once but is there only one draw? That statement could be taken to mean that if your first and second ticket are drawn out then they'd take a redraw since you'd already won one.

Fingers crossed you respond to this promptly so someone can solve it before the magician spots this and ruins the fun


j/k mate
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Old Jun 17, 2005 | 10:13 AM
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Originally Posted by ProV1,Jun 15 2005, 05:24 PM
raffle tickets are being sold for $25 each. each person can buy up to 5 tickets. each ticket has a 1:4100 chance of winning. if you buy more than 1 ticket, then each ticket will be put in different pots.

my question is, does my chance of winning (you can only win once) increase if I buy 5 tickets vs 1 ? or are my chances still 1/4100 = 5/20500 even if I buy 5?
Going on the assumption there is 4100 total tickets for sale and only 1 prize, your odds of winning are:

1 ticket: .024%
2 tickets: .049%
3 tickets: .073%
4 tickets: .098%
5 tickets: .122%

However it sounds like there are multiple prizes and multiple pots, so you'd need to know how the tickets get split to figure the odds. However, your odds will always be better with 5 tickets; but likely not 5 times better.
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