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This isn't a paradox, but rather a math problem with flaws in the author's logic. It's a very simple riddle, suitable for elementary school. And it's quite old, too.
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And I... I solved it before all of you!
There are no iron objects in the room, except for two metal bars, one of which is a magnet.
How can you determine which of the bars is the magnet?
Мужчина, который утверждает, что место женщины на кухне — просто не знает, что с ней делать в спальне!