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

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

Can you place six X (crosses) in below board without making three in a row in any way ?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Rearrange the letters in "new door" to make one word.

It is always ahead of me yet I can never see it. What is it?

What is the end of everything?

There were five men at church, and it started raining while they were outside. The four that ran still got wet, but the one that was still stayed completely dry. Why did he stay dry?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?