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Matchstick Equations


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21 replies to this topic

#1 rookie1ja

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Posted 31 March 2007 - 11:29 PM

Matchstick Equations - Back to the Matchstick Puzzles
Try to rectify a mistake by moving a single matchstick, to get the correct equation.
(Edit: you can not place any matchstick diagonally over the equals sign)

The following equation is made of 11 matches:
XI - V = IV (more solutions)

The following equation is made of 11 matches:
X + V = IV (more solutions)

The following equation is made of 10 matches:
L + L = L (more solutions)

The following equation is made of 12 matches:
VI = IV - III (more solutions)

The following equation is made of 14 matches:
XIV - V = XX

The following equation is made of 11 matches:
IX - IX = V

The following equation is made of 12 matches:
X = VIII - II

The following equation is made of 7 matches:
VII = I

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
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#2 Tap_521

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Posted 24 May 2007 - 08:19 PM

What? Confused!
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#3 mrmogul321

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Posted 28 June 2007 - 06:56 PM

Hah, one thing you could do, is pick up a random match, and place it diagonally over the equals sign. Making the statement read, XI (doesnt equal) X.
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#4 townsfolk

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Posted 02 July 2007 - 05:29 AM

1. move the I from XI over to after the V.
XI - V = IV
becomes:
X - VI = IV (10 - 6 = 4)

2. Move the I from the + to make it a -, and move it to after the V.
X + V = IV
becomes:
X - VI = IV (10 - 6 = 4)
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#5 etanhappy

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Posted 12 July 2007 - 10:17 PM

Haha. square root of 1. Ha ha
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#6 gutterpup

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Posted 28 July 2007 - 01:12 PM

Couldn't L + L = L also be changed with a movement of the plus sign matchstick to be L = L = L

and @ mogul, I thought of that same thing
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#7 twilly

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Posted 15 August 2007 - 01:39 AM

i say we light all the matches and watch them burn
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#8 nosmofui

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Posted 18 August 2007 - 01:55 AM

L+L=L

L+I=L I
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#9 MCBergsma

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Posted 30 August 2007 - 05:42 PM

For the last one, why not
From:
VII = I

To:
II-I = I

?
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#10 tandebauer

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Posted 06 September 2007 - 09:34 PM

The last one can not be solved
ll-l=l
that moves to many match sticks.
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