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

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

What do you see in the given picture?

What is the longest word in the dictionary?

Imagine you are in a room with no windows or doors. How will you get out?

What building has the most stories?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

It is always ahead of me yet I can never see it. What is it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?