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Re: Cool Math Trick

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kisame798 is not online. kisame798
Joined: 02 Nov 2008
Total Posts: 208
31 Dec 2012 09:11 PM
Think of ANY NUMBER, then x2, then add 10, then divide it by 2, then subtract it by the original number.



I guarantee the answer will always be 5.
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ventus48539 is not online. ventus48539
Joined: 09 Oct 2011
Total Posts: 115277
31 Dec 2012 09:14 PM
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Sphyrinx is not online. Sphyrinx
Joined: 05 Jul 2011
Total Posts: 22022
31 Dec 2012 09:15 PM
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kisame798 is not online. kisame798
Joined: 02 Nov 2008
Total Posts: 208
31 Dec 2012 09:16 PM
Surrounded by morons...
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Touchforce is not online. Touchforce
Joined: 22 Jul 2012
Total Posts: 3565
31 Dec 2012 09:18 PM
i thought of -1
x2 = -2
add 10 = 8
÷2 = 4
4 - -1 = 3

fail
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dude4484 is not online. dude4484
Joined: 06 Dec 2010
Total Posts: 309
31 Dec 2012 09:18 PM
My head just exploded that is amazing.
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PurelyRandom is not online. PurelyRandom
Joined: 05 Mar 2011
Total Posts: 36763
31 Dec 2012 09:19 PM
@Touch;

4 - -1 is 5 you idiot.

4 - (-1) = 4 + 1 = 5
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PurelyRandom is not online. PurelyRandom
Joined: 05 Mar 2011
Total Posts: 36763
31 Dec 2012 09:20 PM
But it's because when you multiply a number by two, and divide by two later, you get the same damn number.

Adding 10 just makes it so it's always 5. Without that, you'd just get the same number you started with.

Not that great of a trick OP.
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Dashspin is not online. Dashspin
Joined: 05 Aug 2010
Total Posts: 6152
31 Dec 2012 09:20 PM
@Touch Actually, 4 - -1 is still five. Where did you learn arithmetic?
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konichiwah91 is not online. konichiwah91
Joined: 18 Jan 2011
Total Posts: 3677
31 Dec 2012 09:21 PM
I did 2,000,000

x2

=

4,000,000

+10

=

4,000,010

divided by 2

=

2,000,005


nob
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kisame798 is not online. kisame798
Joined: 02 Nov 2008
Total Posts: 208
31 Dec 2012 09:22 PM
you know your trying to hard when you actually start to use negative numbers...
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kisame798 is not online. kisame798
Joined: 02 Nov 2008
Total Posts: 208
31 Dec 2012 09:23 PM
@kon


you didnt subtract by the original number...noob.
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Bigjohndeerehunter99 is not online. Bigjohndeerehunter99
Joined: 22 Jan 2012
Total Posts: 3536
31 Dec 2012 09:23 PM
My friend can so a trick were itsthe year where in
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XxDeathOfEvilxX is not online. XxDeathOfEvilxX
Joined: 29 Dec 2012
Total Posts: 199
31 Dec 2012 09:24 PM
lol
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PurelyRandom is not online. PurelyRandom
Joined: 05 Mar 2011
Total Posts: 36763
31 Dec 2012 09:26 PM
Here is how the damn trick works idiots.
Hey kisame, listen up you brat.



When I think of a number, let's say 50, I multiply by 2.

Now I have 100.

I add 10, but let's keep that separate for now.

So I have 100 + 10. Now I have to divide by 2.

So I have 100/2 + 10/2 which is 50 + 5.

Now I subtract the first number I started with, so that takes out the 50.

Voila, there is 5.

NOT TOO GOOD.
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Dashspin is not online. Dashspin
Joined: 05 Aug 2010
Total Posts: 6152
31 Dec 2012 09:26 PM
x * 2 + 10/2 - x
*2 and subtract the original number cancel each other out because
5 * 2 = 10 -5 = 5 if you substitute 5 for x
Then you're left with
10/2
which is 5

Wow.
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Dashspin is not online. Dashspin
Joined: 05 Aug 2010
Total Posts: 6152
31 Dec 2012 09:27 PM
By the way, this is unoriginal
http://www.roblox.com/Forum/ShowPost.aspx?PostID=85814344
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PurelyRandom is not online. PurelyRandom
Joined: 05 Mar 2011
Total Posts: 36763
31 Dec 2012 09:27 PM
^ Look it's dash.

Probably the only other one with brains in here.
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XxDeathOfEvilxX is not online. XxDeathOfEvilxX
Joined: 29 Dec 2012
Total Posts: 199
31 Dec 2012 09:27 PM
ok i did 6 so 6x2=12 add 10 22divide2=11
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PurelyRandom is not online. PurelyRandom
Joined: 05 Mar 2011
Total Posts: 36763
31 Dec 2012 09:28 PM
@Xx; And subtract 6 again.
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