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#1
Well, okay, I don't know if this could be consider that, but it certainly gets your mind going.

Also, I'm not sure if this has been posted before, so sorry in advance if it was. It's not really the easiest thing to search for.

"There are three men who have $10 each. They all go to the store together and, with their combined funds, buy a $30 item. They each give their $10, and leave the store.

Soon after, the cashier realises that he had made a mistake, and that the item the three men bought was on sale for $25, instead of $30. So he runs outside and catches the men before they're gone and tells them, 'I made a mistake, your item was only $25, so I can give you back your $5. But, to make it fair, I will give you each one dollar back and keep two for the store.' which now means each man has spent $9 instead of the original $10, since they got $1 back each.

Well, 9 x 3= 27, and the cashier kept the other $2. Which makes a total of $29.

What happened to the other dollar?
"


Now, this isn't meant to be a riddle, because I don't know the answer myself, but if anyone can tell me how this occurs and WHERE the other dollar is, that would be amazing.
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#3
I remember reading the answer, and it was something along the lines of nobody fucking cares about one dollar.
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#4
With the store clerk.
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#5
The men have spent 3 x $9 = $27, after they got $3 back.

$27 minus $25 = $2, which is what the cashier kept.

Adding up $2 and $27 is stupid, because both are what they spent. $2 is part of those $27.
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#6
Wait... what?
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#7
25 + 2 + 3 = 30
(9 x 3) -2 = 25

It all works, but only if you think about it in the right way.

But yes, it is confusing, and I cant explain it so it makes sense. I used to be able to though, so give me a minute
#9
they paid $30

the item cost $25

he gave $3 back, a dollor to each man

then kept $2 for the store
which is $5
which is how much he gave back
#10
I hear stupid riddles like this all the time and the answer is......WHO THE F*CK CARES!?!?!



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#11
I don't think you read it right.

Spends 25
Gives 3 to each bloke
keeps 2
They all spent 9.33$


damn nigga!
#12
Maybe the cashier made the error by divind my zero...


On topic, it's quite strange, but simple


Item was 25, and she gave three back. which means 25+3=28

And two for the store.

Which means 30

You got the 29 because it's not an exact division of the final 5 dollars, which means that the two different ways come out with different answers, the adding back up method, and the 3x9 method

I think, anyway, i don't claim to be anywhere near good at maths
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#14
Quote by Raziel2p
The men have spent 3 x $9 = $27, after they got $3 back.

$27 minus $25 = $2, which is what the cashier kept.

Adding up $2 and $27 is stupid, because both are what they spent. $2 is part of those $27.


This.
#15
There is no 'other dollar'. The rest of the money (i.e. the $25) is in the cash register, you nonce.
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#16
well the store has 27 dollars (including the 2 they got back) and the men got 3 back...27+3 = 30...
#17


basically, $30 has nothing to with anything. they were supposed to pay $25. instead, they paid $27. the shop kept the extra $2. its a trick question. there's no reason why the 27 and the 2 ought to make 30. $30 is what they gave to the shop. the item was $25. they got $3 back, so they paid a total of $27, of which $2 was the extra kept.

there is no missing dollar.
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#18
That was the easiest riddle ever...
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#19
Quote by Raziel2p
The men have spent 3 x $9 = $27, after they got $3 back.

$27 minus $25 = $2, which is what the cashier kept.

Adding up $2 and $27 is stupid, because both are what they spent. $2 is part of those $27.

He be the right one.
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#20
Quote by zeppelinfreak51
You divided by zero

Oh shi-



Dividing by zero jokes: always funny
#21
It's just a wrong way of looking at it.
No dollars went missing.
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#22
Thats not a flaw in math. Thats a flaw in ur understanding of math.

There is no missing dollar, the 2 dollars goes back to the store so the sale goes from $27 to $25. This way the five dollars are made up for and everyone goes home happy. Dont say math is flawed when you dont understand what you are talking about.


Good day.


Edit: beaten to it
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#23
You're counting the money the cashier has twice. With the money that they should have paid ($25) plus the money that the cashier took for themselves ($2) makes $27. Then there's the 3 dollars that is given to each man. That makes $30.

There is lies in the wordingz!

EDIT:
LOL in the time it took me to work it out there had been an extra page of posts. ;(
#24
Quote by Raziel2p
The men have spent 3 x $9 = $27, after they got $3 back.

$27 minus $25 = $2, which is what the cashier kept.

Adding up $2 and $27 is stupid, because both are what they spent. $2 is part of those $27.


+1

I remember solving this before. It's an error in the "riddle" not some hidden flaw in maths.
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#25
a=b
a^2=ab
a^2-b^2=ab-b^2
(a-b)(a+b)=b(a-b)
a+b=b
b+b=b
2=1
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Yeah. people, like Lemoninfluence, are hypocrites and should have all their opinions invalidated from here on out.
#26
Quote by Lemoninfluence
a=b
a^2=ab
a^2-b^2=ab-b^2
(a-b)(a+b)=b(a-b)
a+b=b

b+b=b
2=1


Dividing by zero, O NOES!!!!

Thats where that one falls apart. Trust me, maths has everything covered
#27
Quote by Mask_of_Terror
Dividing by zero, O NOES!!!!

Thats where that one falls apart. Trust me, maths has everything covered

I know. I took it from the invalid proofs wiki page.

first time I saw it (on some other site) it took me a few seconds to realise what had gone wrong.
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Quote by element4433
Yeah. people, like Lemoninfluence, are hypocrites and should have all their opinions invalidated from here on out.
#28
Quote by Lemoninfluence
a=b
a^2=ab
a^2-b^2=ab-b^2
(a-b)(a+b)=b(a-b)
a+b=b
b+b=b
2=1


wrong.

a+b=b when a=b so both must equal zero.
therefore the equation is all a representation of zero.
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Either way, I don't think bananas should be placed in such proximity to an ass

I disagree. Bananas and ass are like peaches and cream.
#30
Quote by Mask_of_Terror
Dividing by zero, O NOES!!!!

Thats where that one falls apart. Trust me, maths has everything covered


Beat me to it.

I remember solving that one too.
Is it still a God Complex if I really am God?

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#31
yeah, the mistake is in saying "so they all only payed 9$", which is bullcrap because the store guy kept 2$.
#32
Quote by CoreysMonster
yeah, the mistake is in saying "so they all only payed 9$", which is bullcrap because the store guy kept 2$.

the mistake is counting the $2 twice.
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Quote by element4433
Yeah. people, like Lemoninfluence, are hypocrites and should have all their opinions invalidated from here on out.
#33
Quote by Lemoninfluence
the mistake is counting the $2 twice.


no, the mistake is in saying "so they all only payed 9$"

don't you argue with the monster!
#34
Damn! I actually thought i could pwn my maths teacher when i saw this thread.
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#35
Quote by Mask_of_Terror
Dividing by zero, O NOES!!!!

Thats where that one falls apart. Trust me, maths has everything covered

Wrong, actually. I'll leave a comment when I finally find this Maths problem which is illogical...
#37
Quote by CoreysMonster
no, the mistake is in saying "so they all only payed 9$"

don't you argue with the monster!

they did only pay $9. they gave 10 to the cashier and eventually got 1 back.

I'll argue with whoever I want thank you very much. Monsters don't scare me, I'll eventually have to deal with other lawyers and they're much, much worse
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Quote by element4433
Yeah. people, like Lemoninfluence, are hypocrites and should have all their opinions invalidated from here on out.
#38
Case of the missing dollar: Worst math "problem" ever.
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#39
Quote by Lemoninfluence
they did only pay $9. they gave 10 to the cashier and eventually got 1 back.

I'll argue with whoever I want thank you very much. Monsters don't scare me, I'll eventually have to deal with other lawyers and they're much, much worse



oh i get it now *zoink*

don't argue with the monster UNLESS you're right!
#40
Quote by Craigo
Wrong, actually. I'll leave a comment when I finally find this Maths problem which is illogical...


I look forward to seeing it. If it exists that is
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