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

Can you make a fire with just a single stick?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

What is the riddle which can be asked all day with a different correct answer each time.

Can you solve the photo plexer logic ?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What is the next number in this series?

4,12,84,3612....

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?