Thursday, September 17, 2009

Two trouble

Prove that 2/10=2 !

- Kushal chandel

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7 Comments:

Blogger Chris said...

Taking a serious liberty, if work mod 18, then 2 / 10 = 2 (mod 18)
=> 2 = 20 (mod 18) and that is true.

I might be back ^^

September 17, 2009 8:49 AM  
Blogger Miguel Tato said...

(a-b)^2=(b-a)^2
If a=1 and b=1/10,
(1-1/10)^2=(1/10-1)^2
Taking the square root,
1-1/10=1/10-1
Adding 11/10 to both sides,
2/10=2

LOLOL... Quite a cheating, huh?

September 17, 2009 10:37 AM  
Blogger Miguel Tato said...

Just saw the correct answer. Too farfetched, could never get it by my own. And so, I prefer mine ;)

September 17, 2009 11:02 AM  
Blogger Chris said...

Miguel, I think your answer is more like it. Very clever manipulation.

September 17, 2009 2:20 PM  
Blogger Chris said...

I just Googled it too. Other answer is rubbish compared to Miguel's. So I won't post it.

September 17, 2009 3:02 PM  
Blogger Miguel Tato said...

It is easy to generalize this fake demonstration to proove any equality. For example to proove that e=pi,
(e-pi)^2=(pi-e)^2 =>
=> e-pi=pi-e => e=pi

If I have some time, I'll try to find a way to "cover up" a little bit the cheating step...

September 18, 2009 7:46 AM  
Blogger Chris said...

Hi Miguel, I hadn't knowingly seen that particular set of moves before. You handle it like a pro. I doubt that you can hide the cheat easily while retaining the elegance.

September 18, 2009 8:55 AM  

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