Paradox

1. Pinocchio paradox.
If he says that it will grow, but it doesn't, he's lying, but it grows when he lies, so he'd be telling the truth, but his nose still grew while he told the truth.

2. Crocodile dilemma.
A slim crocodile living in the Nile took a child. His mother begged to have him back. The crocodile could not only talk, but was also great sophist and stated, "If you guess correctly what I will do with him, I will return him. However, if you don't predict his fate correctly, I'll eat him." What statement should the mother make to save her child?

3. The Grandmotherless girl.
A girl goes into the past and kills her Grandmother. Since her Grandmother is dead, the girl was never born. If she were never born, she never killed her grandmother.

4. Yes or No?
Answer truthfully (yes or no) to the following question: Will the next word you say be 'no'?

5. This sentence is false.
If "this sentence s false" is true, then the sentence is false, which would in turn mean that it is actually true, but this would mean that it is false, and so on and infinitum. Similarly, if "this sentence is false" is false, then the sentence is true, which would in turn mean that it is actually false, but this would mean that it is true, and so on and infinitum.