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Category: Science
Date: 02/14/10 12:03 PM

44 Responses to 64 = 65? Yes It Does [Video]

  1. Profile photo of fancylad
    fancylad Male 30-39
    18502 posts
    February 14, 2010 at 9:54 am
    Link: 64 = 65? Yes It Does - How is this math fact explained? Just watch and take notes...
  2. Profile photo of NexusLetum
    NexusLetum Female 18-29
    136 posts
    February 14, 2010 at 12:14 pm
    Found the explanation.

    Explanation

  3. Profile photo of Dakkar
    Dakkar Male 18-29
    1256 posts
    February 14, 2010 at 12:18 pm
    It`s done with a little editing by the maker of the video. When the pieces are rearranged normally, you would see a very narrow strip between the two triangles that is uncovered. The area of that strip is equal to 1 square, the supposedly missing square.

    Here, they tried to cover it up by thickening the hypotenuses of the triangles after they have been flipped. If you look closely, you will see that they are thicker and darker than before.

    So 64 = 64. Math wins and cheaters never get ahead.

  4. Profile photo of nakoninja
    nakoninja Male 18-29
    354 posts
    February 14, 2010 at 12:20 pm
    FAIL changing the perimeter changes the area inside. this is like the one where they have the "missing" piece when a puzzle was rearranged. all it is are the angles of the shapes and where they are placed.
  5. Profile photo of almightybob1
    almightybob1 Male 18-29
    4290 posts
    February 14, 2010 at 12:23 pm
    Similar to the last one, there`s a small gap in the centre of the 5x13 shape where the four coloured segments don`t match up properly. This gap is exactly 1 unit in size.
  6. Profile photo of patchouly
    patchouly Male 40-49
    4746 posts
    February 14, 2010 at 12:25 pm
    I`m not sure why this is puzzling? Isn`t this simple geometry?
  7. Profile photo of Fatninja01
    Fatninja01 Male 30-39
    25408 posts
    February 14, 2010 at 12:31 pm
    my head hurts!
  8. Profile photo of nettech98
    nettech98 Male 50-59
    1043 posts
    February 14, 2010 at 12:51 pm
    "FAIL changing the perimeter changes the area inside"

    Not quite. Take a 4x4 block. The perimeter is 16 units, and the area is 16 square units.

    Now take those 16 blocks and lay them in a straight line. The area is still 16 square units, but the perimeter is now 34 units.

  9. Profile photo of alk3v
    alk3v Male 18-29
    341 posts
    February 14, 2010 at 1:03 pm
    "Similar to the last one, there`s a small gap in the centre of the 5x13 shape where the four coloured segments don`t match up properly. This gap is exactly 1 unit in size."

    Yeah. The thickened lines in the middle of the `after` photo were obviously covering something up. Plus it helps if the shapes are semi transparent too.

  10. Profile photo of manorrd
    manorrd Male 30-39
    2372 posts
    February 14, 2010 at 1:10 pm
    That`s because mathematics is a scam! Always was and always will be.
  11. Profile photo of Vhreio
    Vhreio Male 30-39
    506 posts
    February 14, 2010 at 1:16 pm
    It should be 64 == 65, then.
  12. Profile photo of Angelmassb
    Angelmassb Male 18-29
    15511 posts
    February 14, 2010 at 1:21 pm
    Happy Valentines day everyone!
  13. Profile photo of Froggybuster
    Froggybuster Male 13-17
    122 posts
    February 14, 2010 at 1:48 pm
    Yeah everyone got why this is wrong. Almost all of it doesn`t line up properly but oh well. Maths is always correct!
  14. Profile photo of Lionhart2
    Lionhart2 Male 40-49
    8309 posts
    February 14, 2010 at 1:53 pm
    The sad thing is someone said "Valentines Day" and all the Mathematician could think of was this.
  15. Profile photo of SomeShoes
    SomeShoes Male 13-17
    2056 posts
    February 14, 2010 at 2:42 pm
    can you smell the maths?
  16. Profile photo of bankvole
    bankvole Male 30-39
    959 posts
    February 14, 2010 at 3:48 pm
    Its pretty basic. The shapes don`t match up perfectly, so in the final `65` shape there`s a very thin sliver of a gap running like a very narrow kite shape between them. The size of this gap is the extra `1`
  17. Profile photo of dooflotchie
    dooflotchie Female 30-39
    336 posts
    February 14, 2010 at 4:26 pm
    Damn you, Math! You`re more inconsistent and confusing than my emo ex-boyfriend in high school. This is why I hate you, Math.
  18. Profile photo of Dragonlord
    Dragonlord Male 18-29
    734 posts
    February 14, 2010 at 5:34 pm
    And for my next stunt, I will prove that 45,000,000,000 is the largest number possible.
  19. Profile photo of Lionhart2
    Lionhart2 Male 40-49
    8309 posts
    February 14, 2010 at 5:55 pm
    > Dragonlord
    > And for my next stunt, I will prove that 45,000,000,000 is the largest number possible.

    45,000,000,001

    :-P

  20. Profile photo of fatex52986
    fatex52986 Male 18-29
    1129 posts
    February 14, 2010 at 6:31 pm
    again the slopes arent the same so it wouldnt match perfectly
  21. Profile photo of WakkaWakka
    WakkaWakka Female 18-29
    27 posts
    February 14, 2010 at 6:43 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?
  22. Profile photo of Faramir13
    Faramir13 Male 13-17
    31 posts
    February 14, 2010 at 6:57 pm
    @dooflotchie, you dont understand this? tough...
  23. Profile photo of davymid
    davymid Male 30-39
    12151 posts
    February 14, 2010 at 7:54 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.

  24. Profile photo of thelonious
    thelonious Male 40-49
    3278 posts
    February 14, 2010 at 8:01 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.
  25. Profile photo of hi2pi
    hi2pi Male 30-39
    736 posts
    February 14, 2010 at 8:43 pm
    this is one of the original, pre-internet fakes.
  26. Profile photo of gatorade777
    gatorade777 Male 18-29
    1194 posts
    February 14, 2010 at 10:04 pm
    well .99 equals 1 because 1/3 equals .333 (repeated). 1/3*3=1 and .333(repeated) * 3 = .999(repeated).
  27. Profile photo of LazyMe484
    LazyMe484 Male 18-29
    10443 posts
    February 14, 2010 at 11:23 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.

  28. Profile photo of ohthedrama
    ohthedrama Male 30-39
    162 posts
    February 15, 2010 at 3:01 am
    Here`s what is happening.

    http://www.cut-the-knot.org/Generalizati...

  29. Profile photo of MissDaae
    MissDaae Female 13-17
    19 posts
    February 15, 2010 at 3:24 am
    Ngeh.... Nyeh.... Geh... Grr...

    GYAAAAAAAAAAAAAAAAAAAAAAA.... *head asplodes*

  30. Profile photo of pui
    pui Female 18-29
    3575 posts
    February 15, 2010 at 4:35 am
    I hate math.
  31. Profile photo of MisuriX
    MisuriX Male 18-29
    512 posts
    February 15, 2010 at 5:54 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.

  32. Profile photo of IQover
    IQover Male 13-17
    1043 posts
    February 15, 2010 at 5:56 am
    Lolwut?
    Why do we even try to understand math?
  33. Profile photo of panth753
    panth753 Female 18-29
    9186 posts
    February 15, 2010 at 6:45 am
    If that doesn`t make you feel dumb, then nothing will.
  34. Profile photo of neosophist
    neosophist Male 18-29
    138 posts
    February 15, 2010 at 7:20 am
    a simply tangram messed up everyone. love it.
  35. Profile photo of Kalkin
    Kalkin Male 18-29
    44 posts
    February 15, 2010 at 7:24 am
    The two "triangles" are slightly concave, so the second square has a minuscule gap in it.
  36. Profile photo of TKD_Master
    TKD_Master Male 18-29
    4794 posts
    February 15, 2010 at 8:05 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.

  37. Profile photo of Xutar
    Xutar Male 13-17
    154 posts
    February 15, 2010 at 8:07 am
    this one works because its assumed that the lines are all perfectly straight, they aren`t.
  38. Profile photo of MrRubik
    MrRubik Male 13-17
    68 posts
    February 15, 2010 at 10:31 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.
  39. Profile photo of davymid
    davymid Male 30-39
    12151 posts
    February 15, 2010 at 12:53 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.

  40. Profile photo of Dfaulted
    Dfaulted Male 13-17
    1920 posts
    February 15, 2010 at 5:24 pm
    whoever thinks this works is dumb, when you multiply something it wont make the same answer as something else, 8x8=64 5x13=65
  41. Profile photo of OldOllie
    OldOllie Male 60-69
    15844 posts
    February 15, 2010 at 10:23 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))

  42. Profile photo of happygrass
    happygrass Male 18-29
    85 posts
    February 18, 2010 at 2:08 am
    basic algebra.
  43. Profile photo of atm
    atm Female 13-17
    127 posts
    February 23, 2010 at 2:02 pm
    I Understand this. But 64 cant be 65, or 64 would be 65. But 64 is just 64. And thats all.
  44. Profile photo of PringleMan
    PringleMan Female 13-17
    1356 posts
    October 9, 2010 at 7:57 pm
    does this work? don`t you have to separate with the units whole?

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