Logic Riddles

Question: A dad and his son were riding their bikes and crashed.They were carried to hospitals.And the doctor who looked the son told "i will rescue u because u r my son.How is this possible?

Question: Two coins make 30 cents one of them isn't a nickel what are they?

Question: What is older than Obama, sits still as stone, but in some people's eyes is more appreciated than the president's home ? Hint: HIS nickname has Two words and starts with H and the second with A.

Question: A man walks into a completely dark room. There is a box on a table at the other end of the room and immediately the man knows one of the contents of the box. He cannot smell, see, or hear it.

How does he immediately know what is inside?

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