In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

I have an eye but still cannot see.

Who am I?

How can you tell a raw egg from a hard-boiled egg?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you name an animal whose killing cannot be performed without spilling your own blood?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?