A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I am a word of 12 alphabets.

* Alphabets 12, 4, 7, 2, 5 : Eastern beast of burden
* Alphabets 1, 8, 10, 9 are street made famous by Sinclair Lewis.
* Alphabets 11, 3, 6 are past.

On whole it means a person suffering from delusions of greatness.

What Is it ?

What is the centre of gravity?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

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

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

What breaks yet never falls, and what falls yet never breaks?

The centre of the third figure is empty. What digit should fit inside?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

Who can jump higher than a Mountain?