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[personal profile] anspa
Арик прислал перед концом дня в пятницу: -

"Three guys rent a room for $30 and each pays $10. The receptionist realizes he made a mistake and sends back to the room $5 with the bellboy.
The bellboy doesn’t know how to divide 5 by 3, so he keeps $2 and gives $1 to each guy, therefore each guy only paid $9. Nine times three is 27, plus 2 from the bellboy is 29.
Where is a dollar?"

по-моему я что-то такое уже решал.

Date: 2011-08-01 03:19 pm (UTC)
From: [identity profile] valikv.livejournal.com
25$ + 2$ is what they've paid or 9 times 3
Oldie but goodie

Date: 2011-08-01 04:53 pm (UTC)
From: [identity profile] anspa.livejournal.com
Right, perception of counting the refund as a charge.

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