I’m tall when I’m young, and I’m short when I’m old. What am I?

Can you tell a 3D object that has just two surfaces?

Can you name some countries which do not have the alphabet 'A' in them?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What always comes into a house through the keyhole?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

Decode the movie name from the below picture?

No one wants to have it, but if one got it, he does not want to lose it. What is It?