Can it be possible to build a house that has all its four walls facing towards the South?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Which is faster, Heat or Cold ? Explain.

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

What has one eye, but can’t see?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

How is a fly different from a mosquito?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?