Prove That 1 is Equal to 2 in Four Different Methods
Let us prove that 1 is equal to 2. Is it possible? Can 1=2 ? Yes, possible theoretically. This is called Mathematical Fallacy. Here is the proof that 1 equals 2. So, What is Fallacy? It’s a statement or an argument based on false or invalid inference. In other words, it can described as certain kind of mistakes in calculation, derivation or proof that are often exhibited, collected, as illustrations of the concept of mathematical fallacy. These maths tricks can be sometimes very interesting and entertaining. In the below equations, we will assume that a=b for our calculation to prove that one is equal to 2.
Solution 2: To Prove 1=2 Using Addition and Subtraction method
Solution 3: To Prove 1=2 Using Multiplication and Substitution method
Solution 4: To Prove 1=2 Using Subtraction, Multiplication and Substitution method
Solution 5: To Prove 1=0.5
This is a bonus calculation to prove one is equal to half.
While discussing the above method with teja, one of my good friend,
He proved half is equal to one.
Using Division method.
rani
Oct 15. 2011
this is ridiculousness u cant divide by zero ::: a-b=0 ::
Babaji M P
Oct 20. 2011
How about ::: 5-5=0 :: ?
andy
Oct 15. 2011
you can not simplify with 0.if a=b then a-b=0 and therefore 1not equals 2
Babaji M P
Oct 20. 2011
Wait .. Multiply by 2 on both the sides !!!
Shinrya
Dec 13. 2011
if 5-5=0, that’s a no brainer. Then you say to multiply by 2 on both sides?? so 0=0? DUH.
Even 2(a-b)=2(0) wouldn’t work because anything multiplied by 0 is 0.
Dorald
Jan 05. 2012
in the first question you cant write (a+b)(a-b) because we dont know if b is positive or negative
Blob
Jan 12. 2012
It doesn’t matter if b is positive or negative, it will just switch the “+” to “-” and vice versa.
This makes no difference as (a+b)(a-b)=(a-b)(a+b) by rule of the Commutative (or something like that) Property of Multiplication, which states “a*b=b*a”.
Shahzad
Jan 10. 2012
Humm totally insane.. if for once a=b then why being so meany as not to consider a^2=b^2, and why write and treat “a” different than “b” in the solution later.. totally irrational..
Blob
Jan 12. 2012
Why is everyone ruining the theory that 1=2?
Another theory is that 3/3 doesn’t equal 1.
Proof:
1/3=0.3333333…
1/3*3=0.3333333…*3
3/3=0.9999999…
0.9999999… does not equal 1. So why do we say it does?
Ashwin
May 11. 2012
you cannot cancel 0 if it is on LHS and RHS…..
(a-b) and (a2 -ab) are equal to 0 in the above equations, hence they cannot be cancelled out……..
hence the above 5 proofs are utter nonsense………
Mark Respicio
Jan 27. 2013
What did you mean by subtitute? (Im just studying an elementary algebra) that why i dont know … ^_^