The more of this there is, the less you see. What is it?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Katniss and Peeta are liars. They both lie on some specific days.

Katniss lies on Fridays, Saturdays and Sundays. She speaks the truth on all other days.

Peeta lies on Tuesdays, Wednesdays and Thursdays. He speaks the truth on all other days.

Can you tell that one day of the week when both of them will say "Tomorrow, I will lie."?

I always drive my customer away.

Who am I?

Which flower has two lips?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?