Good Riddles

Question: If you randomly choose one of the following answers to this question, what is your chance of getting it right?

A) 50%
B) 25%
C) 0%
D) 25%

Question: A box of marbles costs $20. If the marbles are worth $19 more than the box, what is the box worth?

Question: What has one foot but not a single leg?

Question: A man gave one son 10 cents and the other 15 cents.

What time was it?

Question: There is an ancient invention still used in some parts of the world today that allows people to see through walls.What is it?