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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I have no life, but I can die. What am I?

You can hear me, but you can't touch or see me.

What am I?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What does it mean?

What happened when the wheel was invented?

What is harder to catch the faster you run?

What seven-letter word has hundreds of letters in it?