Answer:
What bone has a sense of humor?
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
What can be as big as an elephant but weighs nothing?
What is that you will break even when you name it?
They come at night without being called and are lost in the day without being stolen. What are they?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.