how to save your job

When asked three employees in the Director of Labour Is 2 + 2 = 5?
I replied: Yes, sir = 5
The second answered: Yes, sir = 5 if we add a 1
The third said: No, sir, it is an error = 4

On the second day the staff could not find a third colleague at work and after asking him knew he was laid
Marveled deputy director, said the director, sir what has been dispensed from the third?
He replied:
Either he is a liar and I know he is a liar (this type is required)
And the second is intelligent and knows that it is smart (and this kind required)
The third is true and he knows that this is true (and this type tired and difficult to deal with)
He asked his deputy director: now you 2 + 2 = 5?
He said his deputy:
I heard you say, sir, and unable to be explained Fmthlee can not explain the words of the world
Individual manager, saying: That kind hypocrite (and this kind lovable)
The painful reality ,,