You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

What has no start, end, or centre?

I taste better than I can smell. Who am I?

Prove that twice of ten is the same as twice of eleven.

What will you call your mother's brother's brother-in-law?

How many letters are in the alphabet?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?