Menacing Matchsticks V
Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.
You will need thirteen matchsticks for this teaser. Using all of the matchsticks, make the number 631, as the number would appear digitally.
Now, as the fifth Menacing Matchsticks teaser, try to move only two matchsticks to make exactly 5!
You cannot:
Bend or break the matchsticks.
Stack the matchsticks.
Remove the matchsticks.
HintA different viewing angle will also assist you.
Also, look carefully at punctuation.
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Answer
Step 1: Turn the 6 into a 0.
Step 2: Turn the 3 into a 2.
View the matchsticks upsidedown. You should get 120, or 5! (5 factorial).
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Comments
McBobby1212
Mar 10, 2007
 i never would have gotten that. i knew that the "!" had something to do with it, but at teh risk of sounding like an idiot, i don't know what factoral is still, i had fun trying to do it though! very good 
jannie_delta
Mar 11, 2007
 Lol, apparently I'm not thinking too well this morning. Factorial!
Great teaser! 
vlerma
Mar 14, 2007
 Sorry, this one went right over my head because I could my 631 I only used 12 matchsticks to make. I too am having problems with factorial???? 
vlerma
Mar 14, 2007
 In mathematics, the factorial of a positive integer n is the product of all positive integers less than or equal to n. This is written as n! and pronounced "n factorial", or colloquially "n shriek", "n bang" or "n crit". The notation n! was introduced by Christian Kramp in 1808. I looked it up since I was so unsure of myself. No wonder I didn't know  this is definitely outside my data base. Never have been good with math, let alone integers. Sorry

Winner4600
Mar 14, 2007
 vlerma, for the 1, you need 2 matchsticks (look at a digital clock). Was that your problem?
This was actually a really fun teaser, even though I didn't get the answer. It went into my favorites! 
lukeschett
Mar 14, 2007
 And I thought that i was the only one who knew what a factorial was. Very clever. 
Kellington
Mar 14, 2007
 Cool, One of the best teasers I have ever seen on Braingle.
Definitely one of my favorites. 
blablabla
Mar 15, 2007
 SO EASY....i dont know why its difficulty rating is so high....i got this one so quickly and im only 13! (and not 13 factorial) 
Katelin
Mar 23, 2007
 That was another great matchstick teaser! 
IluvDepp_Bloom
May 15, 2007
 Funny, and hard! 
Polynym
May 16, 2007
 Ignoring the factorial what if you moved the top and bottom of three to make the 3 a + and the 1 a 1 ? 
riddle_of_fate
May 18, 2007
 wow i worked soooo hard... I knew ! was a hint but who could've guessed that it was for factorial... lost 13 sticks here lol 
emily103
May 20, 2007
 I knew it was factorial but I forgot what factorial was! 
nerdyiscool
Jun 02, 2007
 What's a factorial? It's June... How am I supposed to remember that?!?!?!?!?!?!?!?!?!?!?!?! 
(user deleted)
Jun 12, 2007
 If you space the numbers out far enough you can easily take apart the 1 and make the 6 an 8 and add a minus sign 83=5 simple 
Punk_Rocker
Oct 26, 2007
 Wow, I found this really easy and really fun. I loved it. =D
Thank god for Algebra II. 
Shadows
Oct 19, 2008
 Vlerma, factorial has next to nothing to do with integers. It only requires the knowledge of counting numbers. And Winner, I don't think the 1 matters much, since it stays the same. So, vlerma, using 12 matchsticks is a bad excuse for not getting it. 
emma5799979
Aug 23, 2009
 I know I'm over a year too late, but shouldn't this be in the Math section? 
klsowell
Aug 27, 2013
 What on earth is a factorial?! 
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