Brain Teaser

Quote from silver914:

It's not that hard. First fill the 5 oz. bottle. From that fill the 3 oz. bottle, then empty it and that leaves 2 oz. in the 5 oz. bottle. Transfer the 2 oz. from the 5oz. bottle to the 3 oz. bottle. Fill the 5 oz. bottle again, then pour just enough from the 5 oz. bottle to fill the three oz. bottle (which already has 2 oz. in it) and that leaves 4 oz. in the 5 oz. bottle.

Next.

Edit: Okay here it is.

The roof of a barn lies east to west, in other words one pitch faces to the north and the other pitch to the south. A rooster lays an egg on the ridge. Which side of the barn will the egg roll down, to the north or to the south?
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right....
 
A world famous historian holds a coin he says is priceless. It was made of stone. It has a stamp 207 bc on it. It has a hole chiseled into the center for stringing them together.

What do you think this coin is worth and why.
 
Quote from silver914:

The roof of a barn lies east to west, in other words one pitch faces to the north and the other pitch to the south. A rooster lays an egg on the ridge. Which side of the barn will the egg roll down, to the north or to the south?
More...

Roosters don't lay eggs.

That's like this stupid riddle: A plane crashes right on the border of two countries. In which country do you bury the survivors?

opm8
 
My favorite:

You own a small casino in Las Vegas. It has 50 standard slot machines. Identical in appearance, they're identical in the function. They have exactly the same payout ratios. The things that cause the payouts are exactly the same. They occur in the same percentages. But there's one machine in this group of slot machines that, no matter where you put it among the 50, in fairly short order, when you go to the machines at the end of the day, there will be 25% more winnings from this one machine than from any other machine. What is different about that heavy-winning machine?
 
Quote from nutmeg:

My favorite:

You own a small casino in Las Vegas. It has 50 standard slot machines. Identical in appearance, they're identical in the function. They have exactly the same payout ratios. The things that cause the payouts are exactly the same. They occur in the same percentages. But there's one machine in this group of slot machines that, no matter where you put it among the 50, in fairly short order, when you go to the machines at the end of the day, there will be 25% more winnings from this one machine than from any other machine. What is different about that heavy-winning machine?
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That one machine is plugged in (or turned "on"), and the others aren't.
 
Quote from nutmeg:

My favorite:

You own a small casino in Las Vegas. It has 50 standard slot machines. Identical in appearance, they're identical in the function. They have exactly the same payout ratios. The things that cause the payouts are exactly the same. They occur in the same percentages. But there's one machine in this group of slot machines that, no matter where you put it among the 50, in fairly short order, when you go to the machines at the end of the day, there will be 25% more winnings from this one machine than from any other machine. What is different about that heavy-winning machine?
More...

It has a sign on it saying "this machine pays out more than the other 49" so it gets played more
 
What’s different about that machine is people have used modern electronics to give a higher ratio of near misses. That machine is going bar, bar, lemon. Bar, bar, grapefruit, way more often than normal machines, and that will cause heavier play. Obviously, there’s a psychological cause: That machine is doing something to trigger some basic psychological response.
 
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