To prove that 2+2=5. Not joking it can be done but how anyone?? Will give 25 points!!
Answers
Answer:
There are circumstances when numbers do not add up to the number that we know they must add up to. We often see this in Probability and Statistics, when the sum of all the possible probabilities does not add up to 100%.
These are caused by rounding errors, when all numbers are rounded to a certain level of precision.
To give a simple example, what do we get if we round all numbers in the equation below to the nearest integer:
2.49 + 2.48 = 4.97
2.49 rounds down to 2
2.48 rounds down to 2
4.97 rounds up to 5
2 + 2 = 5
(joke: 2+2=5 for sufficiently large values of 2)
Let’s give an ACTUAL example based on exact probability:
If you throw ten coins, what is the probability that you will get zero heads, one head, two heads, three heads, etc., up to ten heads? Round all probabilities to the nearest integer.