Logic Riddles

Question: I have existed for centuries, but last only a month. What am I?

Question: "The Captain is my brother," testified the soldier. But the Captain testified he didn't have a brother. Who is telling the truth?

Question: A man looks out to a boat full of people But there's not a single person on board. How is this possible?

Question: There are ten children and ten cookies in a jar. Mrs. Suzie needs to give one cookie to each child. The children also want her to keep one cookie in the jar. how is this possible?

Question: I'm very very strong but always hidden, eventually, my time will come and I'll fit in, what am I?