Logic Riddles

Question: A man walks into an art museum and stares at a painting.When a guard walks up and ask him why he is so interested in the painting he responds with"brother and sisters I have none but that mans father is my fathers son"who is the man in the painting?

Question: A father and his son are in a car accident and the father dies on the scene, so the father is out of the picture. The son is brought to the hospital and when he arrives, the surgeon said, "I can`t operate on my own son!" Who is the surgeon?

Question: In the harbor of a small town, there is a large boat. Coming off of the boat is a ladder reaching down so that the bottom rung is just above the surface of the water. As the tide comes in, the water rises at 1 foot every 30 minutes, and continues like this for 3 hours. If the rungs are each 1 foot apart, how many rungs are under water when the tide stops rising?

Question: If Paul was born on September 17, 1948, then what year is Paul's birthday?

Question: How do you tell if a snake is venomous or not?