What always comes into a house through the keyhole?

What building has the most stories?

I have eight fingers and two thumbs but I do not live. What Am I?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

Give it food and it will live; give it water and it will die.

John was going on a jungle trip. He asked his wife to pack something to eat, something to drink and something to burn if he feels cold in the jungle. When John opens the backpack he found just one thing in the bag. What was it?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?