Riddle: We are two. The first is black when clean, white when dirty; Smooth when new, rough when old; and flat usually on the wall. The second one is white when clean, black when dirty; long when young, short when old; has no legs but moves, usually from left to right. The more we touch each other, the more one become dirty; and the other becomes shorter. We are two of a writer's materials. What are we?
Answer: A Chalkboard (Blackboard) and a piece of white Chalk.
Riddle: I am a five-digit whole number, read the same forward, backward and upside down. My second digit is half my third digit; my fifth digit is the product of my first and last digits; and the sum of my whole is ten. What am I?
Riddle: One is very hard to get, yet every man wishes to get one. The other is very easy to get, yet no one wishes to get it. Every man's work is to get one at last. What are they?
Answer: Success and Failure! Other answers maybe accepted.
Riddle: I am a book; darker than the darkness, and yet brighter than light; I contains the Fire of the sun and the coolness of the moon; the storms of the sea and the coolness of the desert; the mystery of a virtuous wife. What book am I?
Riddle: I Look peaceful and lovely without, Yet dangerous and harmful within; The flies come around me, for I am colorful and beautiful; But none dares to touch me; For if any does touch me, I make an end of life for such; for I'll will feed on it. What am I?
Riddle: You are standing outside a door. You throw in an egg, it got broken; You throw in a stone, it breaks a glass; You throw in water, and it wets some papers. What happens when you throw in the towel?
Answer: You give up (probably because you are tired).