If eleven plus two equals one, what does nine plus five equal?

What can you see in the middle of March and April that you can never see in any other month?

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

Make a sentence consisting of three words that have the whole alphabet.

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

what does this below rebus represent identXQQQQQME