What building has the most stories?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

Can you make a six-letter word using the letters N, A and B ?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What always comes into a house through the keyhole?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Which letter of the alphabet has the most water?

Can you start the fire using two pieces of wood?

What kind of tree can you carry in your hand?