Logic Riddles

Question: Every time you lose something, you always find it in the very last place you would look.

Why is this?

Question: What is 40 divided by 1/2, plus 15?

Question: If you toss a coin ten times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

Question: There were 3 men playing on a field playing a game. The guy that had the lowest score won the game. How is this possible?

Question: A man and his son are in a terrible accident and are rushed to the hospital in critical care. The doctor looks at the boy and exclaims "I can't operate on this boy, he's my son!" How could this be?