Where do you go to learn how to make ice cream?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

John was piloting a plane behind a car but was never able to overtake it. Why?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

What can you hold in your right hand, but never in your left hand?

Why is the longest human nose just 11 inches?

Which tank will fill first?

How can a man go eight days without sleep?

I have an eye but still cannot see.

Who am I?

Can you move 2 matchsticks to form four equal sized squares.