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zakruti.com » Knowledge, science, education » Numberphile
The Coin Hexagon - Numberphile

The Coin Hexagon - Numberphile

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Rating: 4.0; Vote: 1
The Coin Hexagon Dennis: This video completely misses what I consider the most interesting part of this puzzle. I used to challenge people in the pub, and of course most people couldn't do it. So I would show them how to do it. Then I would rearrange the six coins, but with an important difference: the solution starts with moving a coin from one of the obtuse angles of the parallelogram, but I rearranged the six coins after demonstrating the solution so that an acute angle was now where I had started. Of course, the victim didn't spot the switch. I earned a lot of free pints with this.
Date: 2022-04-08

Comments and reviews: 9


And if you make cricles and put them from one into the basis of a count it almost counts off all of pie, lol.
3 coins/balanced shape = 3 add one get 4 coins still a balanced shape. = 3. 14 + 1 more coin. 5 coins balanced shape. 3. 1415 add 9 coins. (14 coins all together) = 3. 14159, is still a balanced shape. 3. 141592653 Its like circles for ma pattern that count off the girdding of calculating a curve. lol. how far can you go, lol

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Me: hmm. no i cant do that
Guy: put this one here.
Me: move the middle one where it was then.
Guy: no cant do that
Me: why? -thinks while camera isnt on the coins, sees coins- ok that then the middle and. yeah thats 3 moves.
Guy: -does the exact moves i just did in my head-

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Not trying to brag. Paused before spoiler. Did it in two tries. I just knew the over slant should move above the adjacent underslant of the parallelogram. First attempt I blocked with the single outer most. Second I moved middle. Then I had my last coin. Fun
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it took me 4 attempts and it would have only taken me one, but it took you so long to explain that I can't move the other coins when I move one I was fixated on the wrong idea. As soon as you pointed out that rule I first tried it. It was nifty.
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I have to admit that although I solved it quite fast, I immediately forgot what I did. Anyway, I found the trick again after a few tries. Interestingly the problem going backwards is solved in just two moves.
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Can somebody help me find a video? It was about how if you randomly put n letters in n envolopes, the chance that 1 letter will be in the right evolope is always the same, no matter the value of n.
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I looked at it for literally 1 minute and solved it in my head lol, but I can also solve rubiks cube as well as have a collection of over 100 twisty puzzles and only two really stump me
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I watched this video for the first time and found the 3 move solution before you said three moves are a little bit difficult, without trying it with real coins. Does it mean I'm a genius?
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Im not gonna watch it until I solve it myself. Just one question: can you move two coins simultaneously and count it as -one move- or are you only allowed to move one coin at a time?
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