My friend said that buying more lotto tickets doesn't improve

His logic is probably something along the lines of five times a negligible probability still being negligible.

>>6945917
He's probably just an idiot.

Have you considered looking for non-retarded friends?

each ticket represents a person playing and each ticket will have a 1:1million odds

You should consider offering him a maths book for Xmas

>>6945917
if everyone who bought lottery tickets bought 5 times as many he'd be right

It actually decreases your odds, if you buy more tickets

Buy one ticket, let's say that your chances of winning is 1/1 000 000, which is 1 x 10^-6 , but if you buy FIVE tickets, then your odds of winning is 1/1 000 005 which is about 9.99995 x 10^-7, which is slightly lower than your initial odds.

So therefore, buying 5 tickets slightly decreases your odds of winning, only very slightly though almost negligible

>>6945917
5:1million is virtually the same as 1:1million.
Even 365:1million is not that much different.

>>6947462
I think odds are consistent regardless of participants in typical lotteries.

>>6947462
You're an idiot. Your chance of winning with 5 tickets becomes 5/1000005

>>6947462
bait?

Anyway, I'm pretty sure for each ticket you buy, you find your probability by summing each individual probability and subtracting p1*p2. If you buy more tickets There's a union formula for it I believe, S1-S2+S3...+(-1)^n*Sn where each Sn represents the sum of the intersection of n sets for each possibly combination.

I'm actually thinking about it more and it's beginning to make less sense to use that approach, since the probability that two lottery tickets winning is 0? And I think this would be what the intersection of two sets is claiming?

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>>6947482
>chance of winning
>>6947487


He's talking about Odds, not chance. So is OP.

please re-think your post.

>>6947499
Well no, he's posting chances and calling them odds incorrectly. But either way, he's wrong. Please rethink you're life, because no one should make these stupid mistakes.

Maybe like this:

Imagine a smaller lottery where a number is picked from 0 to 9. You pick a number, 1. Your odds are 1/10. Now let's say you pick another number, 2. Your odds are now clearly 2/10, or P(1)+P(2)-P(1 and 2) (clearly 0).

Let's say it was a different type of lottery, say a scratch off ticket. Each ticket has a 20% chance of winning. Odds of ticket 1 winning (specifically), .2. Odds of both tickets winning, 1/5*1/5=1/25=.04=4%. This can be seen more clearly when you write out all possible results by assuming there are 5 outcomes for each ticket, 4 of which result in failure. Now, the odds that either ticket 1 or ticket 2 will win are calculated via the union of the two, P(1)+P(2)-P(1 and 2). When you add more tickets, in order to count the odds of at least one ticket winning, formula in:
>>6947487
must be used.

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>>6947478
>>6947482
>>6947487
you guys fell for it :^)

>>6947499
I'm not sure what you mean, please elaborate

My mom tells me that if God wants to bless them in that way that they only need one.

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>>6947500
>>6947511

>doesn't know the difference between Odds and Chance

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>>6947499
>>6947511
>>6947500
Either way, those are some SICK dubs

what were the chances of getting them, that many times, in this thread, that close to each other, all being replies of each other

>>6947533
Oh shit nice

>>6947533
nice dubs

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>>6947533
That was AMAZING

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>>6947544
>>6947533
>>6947500
>>6947499

HOLY SHIT WHAT IS GOING ON HERE.

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>>6947499
>>6947511
>>6947500
>>6947533
>>6947544

THIS THREAD

WORK OUT THE CHANCES WE GOT ALL THIS

>>6947544
>>6947533
hehe more dubs good sir

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>>6947499
>>6947511
>>6947500
>>6947533
>>6947544
I love how, even on a science board, even us, with all this probablity knowledge, we can appreciate some SPECTACULAR gets

I love how, each one of these posts, are replies to each other

>>6947553
>1/11 chance of getting something
>spectacular
not really....

the fact that they are all replies of each other doesn't really affect the odds

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behold, /sci/, as I unleash these dubs!
ill take my novel prize now

>>6947566
GRANTED!

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space time dubs

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>>6947566

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>>6947577
nb yourself

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>>6947575
>>6947577
The closer you are to a KEK thread, the more DUBS you get, this is Einstein's theory of DUBoGETivitiy

Mods please, for Science's sake, please spare these funposters
I haven't laughed this hard in ages
Also, the fact that there is odds/chance discussion, makes the whole get posts more relevant

the odds are actually 50% no matter what you do
either you win, or you don't, those are the only options, so winning is 1/2

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>>6945917
second coming of the dubjesus

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>>6947584
actually the possible events aren't just WIN and LOSE, because in LOSE, you have like millions of different ways you could lose, each which has it's own probability

trust me, i have pondered long and hard about this, I also used to think, why isn't the probability of anything happening half and half (half - it happens, half - it doesn't happen)? I mean it either Happens or it doesn't happen, so wouldn't the probability of everything be 1/2?

Then I came to the conclusion, that while those are two events, there can be several ways something doesn't happen, and several ways something does happen, hence the "The probability of everything happening is 1/2" isn't true

also check em

>>6945917
He's probably just trying to save you money, since even though you improve your odds you're still just throwing money into the sea playing lotto.

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>>6947588
aw shiet

>>6947588
nice

this is truly glorious

If you had replied to a double post, then we could have had a really long chain of dubs

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>>6947596
>>6947588
by the powers vested in me, i summon thee

>>6947521
I know the difference, retard. Do you?

And check my dubs

>>6947588
>>6947577
>>6947566
>>6947544
>>6947533
>>6947511
>>6947500
>>6947499
>>6947477
>>6945922


what, did /sci/tists divise a way to probablistic their way into dubs?

>>6947560
Do you want to know why it's SPECTACULAR?

because
>>6947588
>>6947577
>>6947566
>>6947544
>>6947533
>>6947511
>>6947500
>>6947499
>>6947477
>>6945922

there are 10 DUBS post, in this one thread, yet there are only 44 posts, so really, there should only be 4 posts that are doubles, BUT THERE ARE TEN!

yes, this is why it is spectacular

>>6947641
nope :)))))

>>6947644
Yes

>>6947644
>>6947655
This glorious miracle never ceases to amaze me

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>>6947655
dude...

>>6947615
actually that's worse than normal, every post you have a 50% chance of dubs (either you get dubs or you don't) therefore you'd expect around 25 dubs in 50 posts

>>6947655
>>6947644
someone call [s4s] and tell them to check out these sick dubs
also check'em

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>>6947655
>>6947644

>mfw

EL CHECKO

>>6947687
>>6947667
>>6946478
So close bbys

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Climate check is real

>>6947698
You as well, my brother

>>6947703
The odds were against me bby

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>>6947655
>>6947644
>>6947588
>>6947577
>>6947566
>>6947544
>>6947533
>>6947500
>>6947499
>>6947477
>>6945922

>11 dubs
>double digit dubs
>CHECKED and KEK'd

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>>6947655
>>6947644
>>6947588
>>6947577
>>6947566
>>6947544
>>6947533
>>6947500
>>6947499
>>6947477
>>6945922
>>6947711

Greetings. My name is Patrick Bateman™, and I have contacted you for important matters.

I have taken notice to your post It is of high quality™, but it's not the contents of the post that I'm interested by, it's the post-number.

Your post-number is unlike any other that I've ever seen. It is unique, as no other will ever obtain your distinct strand of numbers, but that is not the only unique thing about it.

Look at the numbers at the very end. Take a close look at them, and you might even realize it, too. Your post-number has ended in repeating digits, that is why I am contacting you.

>>6947710
Thank you my good sir, we knew we could count on our close friends from [s4s]

>>6947711
wow, TWO DUBS!
That is extrodinary!
What does one from [s4s] call this?

>>6947711
shiiieeeettt

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Doubles threads on /sci/? It's really the end, isn't it? It's been fun, at least.

>There are 22 posters in this thread.
>my face when

>>6947716
>What does one from [s4s] call this?
we say "nice dubs"

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Check my no dubs

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>>6947716
>>6947721

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Dubs and string theory confirmed for fact.

>>6947734
>pic related
>7734

>>6945922
>>6947477
>>6947499
>>6947500
>>6947511
>>6947533
>>6947544
>>6947566
>>6947577
>>6947588
>>6947644
>>6947655
>>6947711
If odds are real, how are all these dubs real?

I thought I'd pop in and help check these for science. This is a glorious thread, I must say. :^)

Kind regards, [s4s]

>>6947716
That's double dubs. Or dubdubs. We also occasionally have poker nights, in which case it's simply two pairs. Feel free to drop in anytime, friends! >>>/s4s/

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Hey guys!

>>6947818
>>6947822
I have just realized how good of a couple /sci/ and [s4s] are. If dubs, /sci/ and [s4s] are officially couples.

>>6947844
I love this.

I seriously do, this is the greatest thread ever

[s4s] is actually amazing, I finally found where i can go on a sad night, when I need some KEKs

/sci/ is my board for intellectual discussions
[s4s] is my board for KEKs

>>6947844
This thread is going down as the greatest thread in the history of /sci/.

>>6947855
On a slow enough board, dubs are guaranteed.

>>6947855
Literally everyone on /sci/ can predict when he'll get a dub.

Regardless, I am done with this thread.

>>6945917
Actually buying a second ticket DOUBLES your chances of wining.

>>6945917

In order to calculate the probability, you need to know if the lottery allows multiple tickets with the same number. (If you can choose your number, then it automatically does.)

Also, if the lottery allows a number that no one picked to be the winner, then the odds would change.

>took probability theory with a friend (we are engineering majors)
>now he won't stop trying to put shit into a(n incorrect) forumula and talking about the math (that is also wrong)

>>6948399
stop it already

>>6947825
About the same as the probability of my trips

Second ticket doubles your odds, third ticket increases it by 50%, fourth ticket by 33%, etc.

So each ticket you buy is less of a bargain for your money than the last. That's why I buy no more than 5.

>>6948399
show your friend your dubz.

Also show mine

>>6947844
good double

>>6945917
Whenever you are buying a lottery ticket, what you are paying is not its "price" but the difference between the price and the expected value of the lottery. This is a positive amount.

Every time you buy a ticket, if you are risk neutral, you lose that amount.
Since you are not risk neutral (otherwise you wouldn't buy the ticket in the first place), but you are risk lover, go and buy as many as you -literally- want.
There are no arbitrage possibilities in lotteries, i.e. probabilities do not change EVER. So it is all a matter of how much you want to spend.

captcha: random

>>6948555

How do you guys feel about trips?

>>6947825
50%.

>>6948551
>>6948555
Legendary.

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>>6948551
>>6948555
What is this, I don't even....

>>6948572
It's an epic meme you fucking child.

>>6948578
Are you retarded, son?

Correct me if I'm wrong, but in lotto it doesn't matter how many other tickets there are, what matters is that you guess the random sequence of numbers. So even if youre the only person playing, your odds are still terrible. It increases if you guess several numbers at the same time, if you're rich enough you could guess all numbers at the same time, but then you wouldn't need to play lotto

>>6948566
>>6948572
>>6948578
>>6948594
ebin, simply ebin

>>6948599
The repeating digits at the end of your post number intrigue me.

>>6948599

All the tickets are checked simultaneously. If you picked different numbers for each ticket (and if you didn't then you deserve the "idiot tax" anyway) then the odds do increase in your favor.

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>>6948551
>>6948555

How did he know?

>>6948696

it's mathematical

get!

>>6946484
>this nigga thinks the lottery is a raffle

>>6945917
>My friend said that buying more lotto tickets doesn't improve your odds of winning.
your friend knows there are pre-determined winners

>>6947575
consider that double 75 checked sir

>>6947825
50 50, it happens or it doesn't.

>>6946484
Are you retarded or is this an epic ruse?

He'd still have bettered his chances at winning by a factor of five regardless of how many players there are in total (meaning even if every single other ticket was owned by just one other player it would still make no difference).

>>6949257
are you retarded?

>>6945917
What OP posted:
>My friend said that buying more lotto tickets doesn't improve your odds of winning.

What actually happened:
>My friend saw me buying multiple lotto tickets with my same lucky number, and pointed out that it doesn't improve my odds of winning.

>>6945917
He's right if you assume that every ticket you buy I is added to the total pool, which as far as I know isn't the case since tickets are pre printed and their total amount is constant.

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