 PringleMan
Female, 13-17, Canada
 1364 Posts
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Saturday, October 09, 2010 7:57:46 PM
does this work? don't you have to separate with the units whole? |
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 atm
Female, 13-17, Midwest US
127 Posts
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Tuesday, February 23, 2010 2:02:59 PM
I Understand this. But 64 cant be 65, or 64 would be 65. But 64 is just 64. And thats all. |
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 happygrass
Male, 18-29, Western US
86 Posts
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Thursday, February 18, 2010 2:08:42 AM
basic algebra.
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 OldOllie
Male, 50-59, Midwest US
8712 Posts
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Monday, February 15, 2010 10:23:55 PM
The easiest way to explain this is that in the final configuration, the two lines comprising the tops of the green and orange shapes do not together form a straight line. The slope of a line is the rise divided by the run. The line atop the green triangle has a rise of 3 and a run of 8, and therefore, a slope of 0.375. The line atop the orange shape has a rise of 2 and a run of 5, and therefore, a slope of 0.4.This results in a gap in the shape of a very thin parallelogram with an area, as MrRubik explains, of 1 unit. The width at its widest -- in the center between the green and red triangles -- is approximately 0.117 units. (1/sqrt(73)) |
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 Dfaulted
Male, 13-17, Canada
1932 Posts
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Monday, February 15, 2010 5:24:24 PM
whoever thinks this works is dumb, when you multiply something it wont make the same answer as something else, 8x8=64 5x13=65 |
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 davymid
Male, 30-39, Europe
11676 Posts
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Monday, February 15, 2010 12:53:31 PM
this one works because its assumed that the lines are all perfectly straight, they aren't.
They are. That's not how this works. Read the comments. |
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MrRubik
Male, 13-17, Europe
69 Posts
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Monday, February 15, 2010 10:31:50 AM
@TKD master
the gap in the middle DOES matter
it's very thin, but long so it makes 1cm^2.
check out murderous maths.co.uk if u dont believe me. |
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 Xutar
Male, 13-17, Midwest US
158 Posts
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Monday, February 15, 2010 8:07:14 AM
this one works because its assumed that the lines are all perfectly straight, they aren't. |
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 TKD_Master
Male, 18-29, Midwest US
4827 Posts
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Monday, February 15, 2010 8:05:01 AM
"The two "triangles" are slightly concave, so the second square has a minuscule gap in it."a gap in the middle wouldnt matter, it'd still be 5x13. they very slightly changed every slope, very very very freaking slightly. with many different slopes, they can change each one by just a hair and make it all fit. |
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Kalkin
Male, 18-29, Western US
44 Posts
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Monday, February 15, 2010 7:24:28 AM
The two "triangles" are slightly concave, so the second square has a minuscule gap in it. |
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 neosophist
Male, 18-29, Eastern US
137 Posts
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Monday, February 15, 2010 7:20:51 AM
a simply tangram messed up everyone. love it. |
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 panth753
Female, 18-29, Midwest US
8124 Posts
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Monday, February 15, 2010 6:45:24 AM
If that doesn't make you feel dumb, then nothing will. |
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 IQover
Male, 13-17, Europe
1046 Posts
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Monday, February 15, 2010 5:56:48 AM
Lolwut?
Why do we even try to understand math? |
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 MisuriX
Male, 18-29, Europe
514 Posts
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Monday, February 15, 2010 5:54:25 AM
1/3*3 only = 1 when 1/3*2 is put to decimal places.i.e. 0.33333' + 0.33333' = 0.66666', which is deccmalised to 0.66667, so + 1/3 = 1 so this video is mathematically wrong as generalizations are being used to solve it. |
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 pui
Female, 18-29, Canada
3550 Posts
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Monday, February 15, 2010 4:35:08 AM
I hate math. |
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 MissDaae
Female, 13-17, Southern US
19 Posts
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Monday, February 15, 2010 3:24:24 AM
Ngeh.... Nyeh.... Geh... Grr...GYAAAAAAAAAAAAAAAAAAAAAAA.... *head asplodes* |
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ohthedrama
Male, 30-39, Midwest US
162 Posts
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Monday, February 15, 2010 3:01:44 AM
Here's what is happening. http://www.cut-the-knot.org/Generalizati... |
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 LazyMe484
Male, 18-29, Canada
10503 Posts
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Sunday, February 14, 2010 11:23:14 PM
well .99 equals 1 because 1/3 equals .333 (repeated). 1/3*3=1 and .333(repeated) * 3 = .999(repeated).
Yep. 0.999(repeated) does equal 1. Its called math. |
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 gatorade777
Male, 18-29, Eastern US
1201 Posts
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Sunday, February 14, 2010 10:04:39 PM
well .99 equals 1 because 1/3 equals .333 (repeated). 1/3*3=1 and .333(repeated) * 3 = .999(repeated). |
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 hi2pi
Male, 30-39, Canada
738 Posts
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Sunday, February 14, 2010 8:43:46 PM
this is one of the original, pre-internet fakes. |
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 thelonious
Male, 40-49, Southern US
3200 Posts
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Sunday, February 14, 2010 8:01:27 PM
Old geometry joke that requires you to assume precision that the experimenter is counting on you assuming. Slopes of those areas do not align. |
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davymid
Male, 30-39, Europe
11676 Posts
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Sunday, February 14, 2010 7:54:17 PM
There is no sliver of a gap - It's because when the pieces are changed around, the slope gradually takes away more white space
No. Just no. |
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 Faramir13
Male, 13-17, Canada
31 Posts
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Sunday, February 14, 2010 6:57:03 PM
@dooflotchie, you dont understand this? tough... |
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 WakkaWakka
Female, 18-29, Canada
27 Posts
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Sunday, February 14, 2010 6:43:03 PM
There is no sliver of a gap - It's because when the pieces are changed around, the slope gradually takes away more white space (the space in the little squares)... Wasn't there another similar post like this one? |
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 fatex52986
Male, 18-29, Western US
1135 Posts
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Sunday, February 14, 2010 6:31:51 PM
again the slopes arent the same so it wouldnt match perfectly |
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