What has many keys but can’t open a single lock?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

What is the difference between a jeweller and a jailer?

Who has married many women but was never married?

Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Which is faster, Heat or Cold ? Explain.

What kind of band never plays music?