How many sides does a circle have?

Spot the 3 Differences in the given Picture.

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

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

What do you see here? Your task is to find three words hidden in the optical illusion

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

I have no life, but I can die. What am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?