Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

You need to move three matchsticks to form three squares. Can you do it?

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

There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?