Why do you find that most of the buildings are deprived of the 13th floor?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Ten coins have been arranged as you can see in the given picture. In this arrangement, a triangle is formed pointing upwards. You have to invert the position of the triangle and make it point downwards while changing the position of 3 coins only. Can you do it?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

Which fur should we be getting from the Lion?

What word begins and ends with an E, but has only one letter?

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

How many sides does a circle have?

What two things can you never eat for breakfast?

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?