Freedom Reborn Archive

Community Forums => General Discussion => Topic started by: bearded on August 12, 2008, 09:30:10 AM

Title: math puzzle
Post by: bearded on August 12, 2008, 09:30:10 AM
(i created this myself.)
under what circumstances is it true that 6+6=81?
Title: Re: math puzzle
Post by: Adamence on August 12, 2008, 09:55:59 AM
[spoiler]When it's rotated 180 degrees[/spoiler]
Title: Re: math puzzle
Post by: The Phantom Eyebrow on August 12, 2008, 11:04:53 AM
What Adamence said...

[spoiler]However, it would also be true (at a minor stretch) if you rotate each symbol on its own axis by a little more than 180 degrees (225 degrees say), so that the 6's become like 9's, the 8 and 1 still look like 8 and 1 and the + symbol would become like a multiplication symbol, giving you 9 x 9 = 81.  Sorta...[/spoiler]
Title: Re: math puzzle
Post by: the_ultimate_evil on August 12, 2008, 03:03:28 PM
Quote from: Adamence on August 12, 2008, 09:55:59 AM
[spoiler]When it's rotated 180 degrees[/spoiler]

[spoiler]correct to a degree, but if you rotate a + by 180 degrees you still only get a +, it would have to be 45 degrees[/spoiler]
Title: Re: math puzzle
Post by: Previsionary on August 12, 2008, 03:14:43 PM
Quote from: the_ultimate_evil on August 12, 2008, 03:03:28 PM
Quote from: Adamence on August 12, 2008, 09:55:59 AM
[spoiler]When it's rotated 180 degrees[/spoiler]

[spoiler]correct to a degree, but if you rotate a + by 180 degrees you still only get a +, it would have to be 45 degrees[/spoiler]


[spoiler]Flip the WHOLE thing, UE. If my thinking is correct, you'd get 18= 9+9[/spoiler]
Title: Re: math puzzle
Post by: the_ultimate_evil on August 12, 2008, 03:19:04 PM
this is what happens when you do 5 things at once
Title: Re: math puzzle
Post by: BWPS on August 12, 2008, 11:47:47 PM
Good puzzle!

In what situation is 2 + 2 = -4?
Title: Re: math puzzle
Post by: Glitch Girl on August 13, 2008, 06:30:24 AM
Dunno BWPS, but one of my favorites is

Explain how 10-1=1 is correct.
Title: Re: math puzzle
Post by: Panther_Gunn on August 13, 2008, 07:25:30 AM
Quote from: Glitch Girl on August 13, 2008, 06:30:24 AM
Dunno BWPS, but one of my favorites is

Explain how 10-1=1 is correct.

[spoiler]Binary 2 minus Decimal 1 = 1 (either notation)[/spoiler]

c'mon, GG, you gotta try harder than that for a bunch of geeks that like computer games  ;)
Title: Re: math puzzle
Post by: Glitch Girl on August 13, 2008, 07:36:53 AM
Never said it was hard, just that it was a favorite.  :)

Kinda like this one
(http://www.stkp.com/comedy/wordproblem.jpg)
Title: Re: math puzzle
Post by: BWPS on August 13, 2008, 08:00:28 AM
http://funnyexamanswers.com/

I'm sure most of you have seen this stuff, but funny exam answers are some of the best stuff ever. I'd also link to a certain Oedipus Rex essay, but it's not exactly appropriate.
Title: Re: math puzzle
Post by: Adamence on August 13, 2008, 09:10:13 PM
Quote from: BWPS on August 12, 2008, 11:47:47 PM
In what situation is 2 + 2 = -4?

A couple possible answers:

[spoiler] When there are absolute value signs, since:
|2+2| = |4| = |-4|[/spoiler]

or

[spoiler] When doing arithmetic modulo 8. 
2 + 2 = 4 mod 8, and -4 = 4 mod 8.  So 2 + 2 = -4 mod 8. [/spoiler]
Title: Re: math puzzle
Post by: BWPS on August 13, 2008, 09:21:55 PM
Quote from: Adamence on August 13, 2008, 09:10:13 PM
Quote from: BWPS on August 12, 2008, 11:47:47 PM
In what situation is 2 + 2 = -4?

A couple possible answers:

[spoiler] When there are absolute value signs, since:
|2+2| = |4| = |-4|[/spoiler]

or

[spoiler] When doing arithmetic modulo 8. 
2 + 2 = 4 mod 8, and -4 = 4 mod 8.  So 2 + 2 = -4 mod 8. [/spoiler]

The correct answer is in Bizzaro world.
Title: Re: math puzzle
Post by: Sevenforce on August 17, 2008, 02:59:59 AM
2 + 2 = 11...in base 3 ^^

Shameless math nerds unite!
Title: Re: math puzzle
Post by: Glitch Girl on August 17, 2008, 08:36:36 AM
(http://stkp.com/comedy/speedlimit.jpg)
Obviously a sign near MIT