rx math
Region: US
Thursday 11 June 2026 19:45:11 GMT
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Ramesh :
I kinda feel like this is one of the situations where it's just not clear what the options/restrictions of the problem are. I could buy one ticket, and while I'm scratching it off someone buys the winning ticket. So I lost the opportunity for $1000 because I was being cheap.
2026-06-11 20:27:24
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Rangsk :
What's the probability that the clerk gets annoyed at me buying one at a time and kicks me out?
2026-06-12 00:29:56
22
Wiseman :
I’m buying all ten because I can’t stop someone else from buying one while I’m scratching
2026-06-13 04:08:05
3
ocessionary :
the question is flawed. this is like those tiktok "unsolvable" math problems where everyone gets different answers because they use the grade school dividing symbol and no parentheses
2026-06-12 10:17:53
6
Best of Shoshana Bean :
You literally said “the other tickets are worthless” in the beginning.
2026-06-11 20:04:48
8
Jonathan :
The expected value of an individual ticket is $90. 990*0.1 - 10*0.9. But you could just buy every ticket and get a guaranteed $900.
2026-06-12 05:37:30
2
freedomforall42069 :
this is why people hate math lol.
2026-06-12 03:49:19
0
Rangers fan 77 :
Hmm I thought it was the type of thing where you get a number and the number gets announced once. So like if you don’t have all the tickets before it gets announced you’re out of luck
2026-06-12 01:03:11
1
Matthew :
Then some lady comes in and buys the winning ticket while you’re standing there scratching one off. Don’t be greedy, just buy all 10 at once.
2026-06-12 14:35:30
3
Alex :
But what if, while you're buying them one-at-a-time, and someone comes in and just buys the rest of the tickets?
2026-06-12 05:21:16
2
Detroit Violin :
@Detroit Violin: I feel like adding the caveat that you can buy one ticket at a time after proposing the original question is more of a "gotcha" rather than a math problem.
2026-06-13 01:43:54
1
Robin🇸🇪 :
I immediately thought ”buy one at a time and scratch them”, then I went ”oooh but what if someone else comes in while I’m scratching and buys the winning ticket? Better buy all of them at once!”
2026-06-12 06:08:58
4
Craig Peters :
I buying them all before someone else comes in
2026-06-12 09:00:46
4
Mister JR Little :
You need to buy all ten because somebody else could buy them while you are scratching the cards.
2026-06-12 04:24:54
4
TikTokTexn :
the one at a time suggestion assumes nobody else in line decides to also buy tickets.
2026-06-12 03:29:16
2
@krakrak🏳️🌈🇵🇱🇪🇺 :
So maybe buy all, scratch until you win, and then try to resell the remaining ones
2026-06-12 10:56:45
2
among.them :
I expect to earn $0 and must question how I "know" there is a $1000 scratch off without having already checked them all. Where did I get this knowledge, and who profits if I believe it?
2026-06-12 23:57:55
1
david LastName :
I mean, yeah, assuming for some reason, you're one hundred percent sure nobody else is going to walk into the store and buy a scratch off. this is a problem mathematicians have is they make weird assumptions that do not coincide with reality and try to make you sound dumb for not making the same assumptions.
2026-06-13 01:21:31
1
jayemathisen :
bird in the hand.
2026-06-12 07:20:17
1
Squib the Squid :
the mathematicians were right. is it possible to be the first second third ticket? yes. but with my luck it is the last one, but it also scans faulty and they refuse to pay out
2026-06-11 22:27:30
1
my cat smells like catfood :
You just gave a great example of applied math and theoretical math If you buy them one at a time you can expect to lose $20. Because somebody in that store will wonder why you’re buying a ticket, scratching it, and then going back up to buy a ticket and they’ll find out that the thousand dollar ticket has not been sold and they’ll see that there’s eight tickets and buy those before you get up for your third ticket
2026-06-12 13:03:15
1
ray_sizzem03 :
it costs $100 to buy them and you will definitely win $1,000. so you should expect to win $900
2026-06-12 13:42:07
1
AlteranMage :
$900 would be the exact amount *I* expect to earn because I would just buy the tickets and scratch them 🤷♂️
2026-06-12 15:48:08
1
AAAAAGHSH :
it's because the question is explicitly phrased to imply that the only potential variable is the number of tickets I buy. Like if we're being that extra about it why not shine a bright light through each ticket to see which one is the winner before you buy? there's no meaningful mathematical curiousity here it's just shitty question design.
2026-06-12 11:53:57
0
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