A Mathematical Proof that "Girls are Evil"
1. “Girls require time and money”;
girls = time × money
2. “Time is money”:
time = money
3. So girls are money squared:
girls = money2
4. ”Money is the root of all evil”:
5. So, girls are evil:
Prove that 2 = 1
If a = b (so I say) [a = b]
And we multiply both sides by a
Then we'll see that a2 [a2 = ab]
When with ab compared
Are the same. Remove b2. OK? [a2 − b2 = ab − b2]
Written by PeterW
(Just in case you're wondering - the above proof is incorrect because in step 5, we divided by (a - b) which is 0 since a = b)
Proof that $1 = 1 cent
$1 = 100 cents
= (10 cents)2
The above proof is incorrect because 100 cents = 102 cents ≠ (10 cents)2
A Proof that 0 = 1.
The above proof is incorrect because when we take the square root we must be careful to include both the positive and negative roots. There should then be two possible answers (one of which is to be rejected).