There was a strange boy who was born before his father. How can this be possible?

What is the fastest way to double your money?

Buy me, smell me or deliver me, I do not change.

Who am I?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____

Why 1729 is a magic number? Answer Logically.

What has one eye, but can’t see?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Using Only Five 5's and any mathematical operator make sum as 37

Which is heavier: a ton of bricks or a ton of feathers?