Logic Riddles

Question: If Teresa's daughter is my daughter's mother, then what am I to Teresa?

Question: My first is third, like the sound of the sea. My second is the center of you, not me. My third is the end of him, not you. My fourth starts a picture, not a view. My fifth is in bean, though not in been, My sixth and seventh start seldom seen. Sunrise and sunset, warmth and cold, Put these together and a sign will unfold.

Question: A man was looking at a picture. While staring at the picture he said, brothers and sisters I have none but this man's father is my father's son. Who is in the picture?

Question: You work at a factory that produces dumbbell weights for lifting. One of the 10 machines has been producing weights that are always 1 pound less than the rest of the machines. You have a large scale used to weigh the weights for quality control. How could you find the defective machine by using the scale only once? You are allowed to make as many weights with the machines as you please.

Question: what goes in your mouth hard and dry and comes out wet and soft?