What does it mean?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

How many times in a given day, minutes and hour clock comes in a straight line ?

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

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?

I am sure no one can have two things for dinner. what are they?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

If your uncle’s sister is not your aunt, what relation is she to you?