Logic Riddles

Question: A girl dived in the sea.. some say there are two humans under the sea. Why is that?

Question: Does an ounce of gold or an ounce of feathers weight more?

Question: You are walking down a dark alley at night. Suddenly, a man jumps out of the shadows with a gun. He tells you "I am here to kill you. Tell me one wish. I will not fulfill it, but I will kill you. If you say the right thing, you will be saved." What do you say?

Question: How can twins be born in different years?

Question: Nary a tick, nary a tock- silent, silent, the handless clock. Tarry no longer; cast off all doubt. The sands of time are running out.