Good Riddles

Question: What did the calculator say to the Math student?

Question: A son's age is the age of his dad's age's digits added together. The son is not nine or older. The dad is of legal age. The dad's age doesn’t end in a zero, and is more than twenty, but less than twenty-five. How old is the dad, and how old is the son?

Question: What do you try to solve. A answer you need to think. To think about with your brain. The brain that's only 10% working. What is it that you try to solve. The question of a lifetime?

Question: 12:00 T what does this stand for?

Question: What is a stick but not a stick?