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Duer 157099

(17,742 posts)
Fri Mar 30, 2012, 02:49 PM Mar 2012

Re: the lottery and odds

All this talk about how unlikely it is to win, using statistics etc.

I think that there is an astronomical (large) difference between buying one ticket and buying zero tickets.

But I think there's also an astronomical (small) difference between bying one ticket and multiple tickets. That is, there is no need to buy more than one.

This is my own math, of course. But it strikes me that it might be like calculus somehow.

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Tony_FLADEM

(3,023 posts)
1. There is a way to reduce your odds
Fri Mar 30, 2012, 02:59 PM
Mar 2012

It's called the Wheeling System. For example, in a 6 of 53 number lottery, you can pick 7 numbers and play 7 different combinations or 28 combinations with 8 numbers.
You divide the odds by the number of tickets played.

If you played 8 numbers the odds would be 1 in 819910.

davsand

(13,421 posts)
2. You for sure won't win if you don't buy a ticket.
Fri Mar 30, 2012, 03:28 PM
Mar 2012

I bought a ticket figuring that somebody's gotta win that sucker sooner or later--might as well be me! (As Jayne said in Firefly, "It could happen!&quot



All joking aside, I look at stuff like this as being kinda like going to the movies. I go to the theater and I pay money to be entertained for the 2 hours that it takes to see that movie. I buy a lottery ticket and I get to fantasize about winning until the winner is chosen. That lottery ticket costs quite a bit less than the movie ticket, and if I buy it right after the last drawing, I get to fantasize longer...



Laura

lunatica

(53,410 posts)
3. I only bought one for the very reason you state
Fri Mar 30, 2012, 03:30 PM
Mar 2012

Because one ticket improves my odds by 100% over none, but more doesn't improve my odds any more than one does.

Duer 157099

(17,742 posts)
4. Then why do I have this strong urge to go by a few more?
Fri Mar 30, 2012, 03:39 PM
Mar 2012

I know it's illogical but I keep thinking... hmmm, maybe I should get another...

cynatnite

(31,011 posts)
9. Me, too. Husband said $25 was more than enough...
Fri Mar 30, 2012, 05:40 PM
Mar 2012

I told him that a guy spent $500. He said he'd rather us be out $25 than $500.

So, I'm sticking with what I got.

Oh, and $10 of that is Powerball. Not many people are buying that so maybe I've got a shot.

lastlib

(23,239 posts)
14. Actually, one ticket versus none improves your chances by infinity....
Sat Mar 31, 2012, 01:00 PM
Mar 2012

(there's a division by zero thing in there...I won't bore you with it.)


Myrina

(12,296 posts)
5. My Stats Prof used to have a sign on her office door:
Fri Mar 30, 2012, 03:39 PM
Mar 2012

"Lottery Tickets: A Tax on People Who Can't Do Math"

siligut

(12,272 posts)
6. Math astute Mr gut and I had this very discussion last night
Fri Mar 30, 2012, 03:40 PM
Mar 2012

He wanted to buy $20 worth of tickets, knowing the numbers and didn't care, it is luck he said. Luck isn't logical, but who knows.

I told him it doesn't matter how many, but buy at least one. I don't know how many he bought, but I am going to buy one today. It is exciting just to play.

SwissTony

(2,560 posts)
7. Years ago, I was teaching school.
Fri Mar 30, 2012, 05:12 PM
Mar 2012

The group of teachers I was working in decided to enter the lottery. I don't believe in it (I'm a statistician by training) but just to be social...

Every week, a different person chose the combinations. When it came to me, I chose combinations like (1,2,3,4,5,6) and combinations in the form of a rectangle or a cross. One of my coworkers was a bit peed off stating that such combinations could never win. I was never invited to choose the numbers again.

Some years later, I read in a Dutch statistical journal that some combinations (such as (1,2,3,4,5,6)) shouldn't be picked - not because they were less likely than a more varied combination, but because such combinations were chosen by quite a few people. Other combinations to avoid were those based on the birthdays of the Dutch royal family.

Duer 157099

(17,742 posts)
11. The notion of avoiding certain numbers because many people pick them
Fri Mar 30, 2012, 05:49 PM
Mar 2012

sounds silly to be. I'd rather share 640 million with others than zerio all to myself.

I don't get the logic.

SwissTony

(2,560 posts)
12. Any combination of numbers has the same chance of being chosen as any other.
Sat Mar 31, 2012, 08:26 AM
Mar 2012

So, (1,2,3,4,5,6) is just as good as, say, (7,12,19,24,35,40) - but not any better in terms of being chosen. If the you pick the first combination and it wins, you'll have to share the prize with "many" others, whereas if you chose the second and it wins, you'd have to share with just a few people, perhaps none.

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