Answer:
A box without hinges, lock or key, yet golden treasure lies within.
What goes up but never comes down?
A girl was ten on her last birthday, and will be twelve on her next birthday. How is this possible?
What is the freedom of birds and the pen of old men?
What grows in winter, dies in summer, and grows roots upward?
I am the kind of an ant that's good at math. What am I?