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# 1 = 2 revisited

## Question

It is a beginner-level bit of mathematical magic to prove that 1=2.

This demonstration probably occurs multiple times in the history of this forum.

Its fallacy depends on embedding, and cleverly hiding somewhere in the "analysis," a division by zero.

Which of course is not permitted. So regarding this matter our world is still a safe abode.

Nonetheless, this equality still has a life for puzzle solvers.

By the application of a familiar proof, the addition of a single well-known mathematical symbol,

and without resorting to prohibited mathematical operations, 1=2 can still be shown to be true.

Have fun, and please use spoilers.

## 33 answers to this question

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Is the single well-known mathematical symbol i=(-1)1/2?

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according to a rule which states that,In case of equal amounts, if the bases are equal then the powers are equal too!!

1^1= 1^2
Thus: 1=2

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Is the well-known mathematical symbol i ?

I mean,square root of -1?

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according to a rule which states that,In case of equal amounts, if the bases are equal then the powers are equal too!!1^1= 1^2Thus: 1=2

Very nice wolfgang. Definitely honorable mention.

But the OP asks to add a symbol and a well-known proof.

I think this implies something about taking logarithms with base 1.

Is the well-known mathematical symbol i ?I mean,square root of -1?

Krishna, no, sorry that is not what I had in mind.

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is the mathematical symbol i ? which is square root of -1?

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is the mathematical symbol i ? which is square root of -1?

Hi Krishna, I didn't mean to ignore your previous post.

No, that's not the symbol I had in mind.

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is the mathematical symbol i ? which is square root of -1?

Hi Krishna, I didn't mean to ignore your previous post.

No, that's not the symbol I had in mind.

Oops!Sorry!I couldn't see my posts because i did not go to the next page in replies and i thought my post has not been entered.My mistake!

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The added symbol is the percent sign.

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