How can one talk without saying a single word?

What always comes into a house through the keyhole?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

A bomb exploded in a room full of married couples and no one died. How?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What is black when you buy it, red when you use it, and gray when you throw it away?

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

Spot 5 differences in two Christmas tree below:

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?