What can you see in the middle of March and April that you can never see in any other month?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Which is faster, Heat or Cold ? Explain.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

If two's company, and three's a crowd, then whats four and five ?

What breaks yet never falls, and what falls yet never breaks?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

When monkey rotate the gear, which mark will be hit 1 or 2 ?