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Stupid and funny from all over the world - II

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Meanwhile after PTI's Peshawar Jalsa, thumbs up if you get it.. :D
 
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2a = a
2a - a = 0
a(2 - 1) = 0

So a = 0
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2a = a
(2a)/a = a/a > Dividing both sides by a

So 2 = 1
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2a = a
2a / 2 = a / 2 > Dividing both sides by 2
a = a/2
a/a = a/2a > Dividing both sides by a
1 = 1/2

So 1 = 0.5
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2a = a
2a - a = 0
a(2 - 1) = 0
2 - 1 = 0/a
2 - 1 = 0

So 1 = 0
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WTF ?

2a=a can be TRUE only in one case when a=0;

In Mathematics you can not divide anything with ZERO i.e. here is 'a'.

So dividing with ZERO will give you UNDEFINED results not infinity as some old folks assumes.
 
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so where am i wrong
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Same old trick: Doing some thing which is not permissible in mathematics then come with Surprises.

1.)Dividing with ZERO is not permissible e.g. last problem of a=2a
2.)Taking root of a negative number is not permissible.e.g. root of -1 is UNDEFINED so 3rd step is wrong.:no:
 
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