When paying for a thing that costs $9, pay $10 to get $1 back in CASH.
Then when paying for a thing that costs $2, pay that $1 back and the cashier now has $11 dollars in his hand.
No, the cashier has 10 USD.
@PenguinWhack271828e said in #2:
> No, the cashier has 10 USD.
Try it out yourself!
@Ayushmaan2015 said in #3:
> Try it out yourself!
I think you need to pay more attention in math class!
@NeuralGnat said in #4:
> I think you need to pay more attention in math class!
I already know this life hack!
This sort of reminds me of the cons that Harry the Hat would pull on Coach in the Cheers sitcom, only Harry was a lot slicker. :-)
@Ayushmaan2015 said in #1:
> When paying for a thing that costs $9, pay $10 to get $1 back in CASH.
> Then when paying for a thing that costs $2, pay that $1 back and the cashier now has $11 dollars in his hand.
Let's say you start with $x and the cashier with $y. Then
1. Pay cashier $10 for a $9 item
- Cashier: $y + $10
- You: $x - $10
- Owed: $9 - $10 = -$1
2. Cashier gives you back $1
- Cashier: ($y + $10) - $1 = $y + $9
- You: ($x - $10) + $1 = $x - $9
- Owed: $0
3. Pay cashier $1 for a $2 item
- Cashier: ($y + $9) + $1 = $y + $10
- You: ($x - $9) - $1 = $x - $10
- Owed: $2 - $1 = $1
You have $10 less than you started with, the cashier has $10 more, and you owe $1 since you bought $9 + $2 = $11 worth of merchandise. The cashier doesn't have $11 like you said, because they gave you back the $1.
I've heard a cleverer version of this problem where it seems like money disappeared, but there's really not even a trick in your version.
@AsDaGo said in #7:
> I've heard a cleverer version of this problem where it seems like money disappeared, but there's really not even a trick in your version.
short change scam its called.
its one of the most confusing things to try and understand...
@igmo_fitzpatzer said in #9:
> I will now prove the reciprocal of cubes infinite series sums to exactly 1/2
>
> eh-ahem IT'S ONE HALF! NOW GET IN YOUR **** SEAT AND SHUTUP OR VERY BAD THINGS WILL HAPPEN!
>
> Thank you
Do not swear.
@NeuralGnat said in #6:
> This sort of reminds me of the cons that Harry the Hat would pull on Coach in the Cheers sitcom, only Harry was a lot slicker. :-)
Another method is to take only 1 and 2 cent coins to pay for each item. And since the cashier and the people behind will get impatient, you can make it short and keep some coins, this is called the oligarch tactic, also know as the Mighty Granny move
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