Jump to content
BrainDen.com - Brain Teasers
  • 0


Guest
 Share

Question

Another one from the book, another horrible attempt at doing my own rendition of the book's picture. There are 9 matchsticks in the form of a cube. Suppose two of the matchsticks are removed. How could you rearrange the remaining seven matches so the still form the figure of a cube?

post-5277-1210797551_thumbjpg

Link to comment
Share on other sites

Recommended Posts

  • 0
shifting the point of view to the front so no side face is seen.

A creative idea, but if you do that, there is no guarantee what you're looking at is a cube.

Link to comment
Share on other sites

  • 0
Another one from the book, another horrible attempt at doing my own rendition of the book's picture. There are 9 matchsticks in the form of a cube. Suppose two of the matchsticks are removed. How could you rearrange the remaining seven matches so the still form the figure of a cube?

post-5277-1210797551_thumbjpg

view from front corner, straight on. I'll try to draw, but good luck on that! ...

.__.__.

|__|__|

Not drawn very well, but the middle is the corner/edge of the cube, with two faces showing (one to either side).

Link to comment
Share on other sites

  • 0
view from front corner, straight on. I'll try to draw, but good luck on that! ...

.__.__.

|__|__|

Not drawn very well, but the middle is the corner/edge of the cube, with two faces showing (one to either side).

I assume that's what Bonanova meant, and I gave similar explanation - it's a good idea, but pretend like you are able to see a 3rd side. That being the case, by doing it the way you did, you can only see TWO sides thus have an incomplete cube.

Link to comment
Share on other sites

  • 0

some of you guys are on the right path. ^3 is a very good answer, I say virtually just as good as the actual answer. In fact, the actual answer is very close to this answer (hint hint). Nice work, Nikyma/karl/whoever else chimed in to get that one - a very creative answer

:)
Link to comment
Share on other sites

  • 0
some of you guys are on the right path. ^3 is a very good answer, I say virtually just as good as the actual answer. In fact, the actual answer is very close to this answer (hint hint). Nice work, Nikyma/karl/whoever else chimed in to get that one - a very creative answer
:)

post-7072-1210863910_thumbjpg

2^3=8

8 is a perfect cube.

Edited by karlhite
Link to comment
Share on other sites

  • 0
shifting the point of view to the front so no side face is seen.

What I find funny about Karlhite's answer of "8" above (with 8 being the perfect cube of 2), is that it means that the very first answer posted was correct, although it was by accident.

Bonanova suggested that if you looked at the cube from the front, without seing the sides, you could do so with 7 sticks. Essentially seeing only the front face and the top face. The arrangement of sticks that represents this IS an 8!

:)

Link to comment
Share on other sites

  • 0
What I find funny about Karlhite's answer of "8" above (with 8 being the perfect cube of 2), is that it means that the very first answer posted was correct, although it was by accident.

Bonanova suggested that if you looked at the cube from the front, without seing the sides, you could do so with 7 sticks. Essentially seeing only the front face and the top face. The arrangement of sticks that represents this IS an 8!

:)

I thought the same thing.

Edited by karlhite
Link to comment
Share on other sites

  • 0
If that's the answer, then I would like to submit an alternate solution.

here

post-6333-1210865573_thumbjpg

Ah, you beat me as I was creating the image, but I have a third submission that also works

post-5918-1210866192_thumbgif
Link to comment
Share on other sites

  • 0

Break each match in half except one, (either into two separate pieces, or joined).

You can now create a cube with all twelve sides and have one match left over.

post-6456-1210870598_thumbjpg

Brown circles indicate optional "joints".

I suppose if you wanted to get technical, you could break the last match into 12 segments and add a segment to each edge. :P

Edited by Jarod997
Link to comment
Share on other sites

  • 0
Another one from the book, another horrible attempt at doing my own rendition of the book's picture. There are 9 matchsticks in the form of a cube. Suppose two of the matchsticks are removed. How could you rearrange the remaining seven matches so the still form the figure of a cube?

post-5277-1210797551_thumbjpg

Looks like--

cubepu4.jpg

Link to comment
Share on other sites

  • 0

Well done, everyone. A lot of creative answers here on a puzzle that required some very creative thinking! I'll put spoiler box with the original answer, as well as some of the other answers you all came up with (really good stuff!!)

original answer -->

organize the matchsticks in the form of an "8" - 8 is the cube of 2.

Other ones

^3 (exponential cube)

27 (cube of 3)

If I missed any others, sorry.

Link to comment
Share on other sites

  • 0

..../\.....------

.../...\..........|

.............-----

..................|

............------

well... i tried to draw someting inside a spoiler but i couldn't quite do it :D

sorry if the spacing is confusing... that stands for ^3

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...