2+2=5
“Wait! What?!” I hear you cry. Well, in some cases, it’s true.
Everybody knows that 2+2=4, right? But what if your value of 2 is small or large enough that this isn’t the case?
The assumption made when adding 2 and 2 together is that this is the exact value of the number, and indeed, if this is the case then 2+2 really does equal 4. But what needs to be taken into account here is that it isn’t specified that 2 holds the value of 2.0, therefore “2″ could actually hold any value 1.5 ≤ x < 2.5… which leaves us with two extra possibilities for our answer: 3 or 5.
Assuming both values of “2″ are the same, any value 1.5 ≤ x < 1.75… will give a number less than 3.5, therefore rounding to 3. In the same way, if the values are 2.25 ≤ x < 2.5 then the result will be equal to or greater than 4.5, therefore rounding to 5.
In conclusion, when values of 2 are equal, 2+2 only equals 4 half of the time. (When values of 2 aren’t necessarily equal however, the answer rounds to 4 far more often)
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3 Responses to “2+2=5”
On September 17, 2009 at 9:26 pm
If it’s 2.5+2.5….then doesn’t it actually round up to 3….that is 3+3=6……..so 2+2=6……….???!!!!
On September 18, 2009 at 2:24 am
Only works if the value of 2 is LESS than 2.5, not equal to it. Otherwise it no longer rounds to 2 and so doesn’t apply.
Also, I assumed the rounding was done AFTER the calculation, otherwise all answers would be 4.
On January 31, 2010 at 7:27 pm
Well then 6+6 could be 13 so this is BS
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