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pallosp

asked on

matchstick puzzle

Move a single matchstick to make the equation true. The = sign mustn't be dashed over. The first 2 different solutions get 250 points.

X=II
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snoyes_jw
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Move one of the I to an angle over the =, to form the equivalent to X >= I
Here's the best I can do to draw what I mean in ASCII:

\/  \  |
/\ =  |
transform X into //, and declare the left hand side to be written in italic font.
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pallosp

ASKER

The task was to make the equation, not the inequality true.
Every match puzzle can be solved by changing the = sign to > or <. This way it's not a challenge.
Take one I from II and lay it over the = to form "X not equal I".  But does that have the same problem as snoyes_jw's solution?  Are you saying that the solution must be an equality?
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ASKER

Matchstick puzzles have sense only if the equal sign remains equal sign. It may be moved, for example V=III-II can be solved as V-III=II, but can't be changed to other relational operator.
ASKER CERTIFIED SOLUTION
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snoyes_jw
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ASKER

Good answer.

The guy who gave me the puzzle said he knew another solution. As he is a mathematician I'm sure that he thought of something more tricky than interpreting // as II in italics. I'm curiously waiting for the alternative solution.
SOLUTION
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Move 1 match from the X to the other side and treat 2 of the matches on the right as absolute value
/ = | 1 |
SOLUTION
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Make it as

X=L
or
X=T

where X & L or T become variable.

so, when we replace X with 4 and L with 4;

X=L
4=4   it's true..

another one...

X-= I

of which in programming means X = X - 1

haha..
Take one from the right side, bust it into four smaller pieces and form a 0 and put it above and to the right of the X

X^0 = 1

:)

Only moving one match!
Hi,


X = II  

from II take one and make X so it will be X=X it's true

(No  perfact X )

or
X=II  take one from X and make II you have II = II  it's true

Thanks
Of course, as it stands:

X = II is also true in base 9 :)
Thanks, pallosp.