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

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

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

which number am I?

You have two rectangular wires.

Both of them have property that when you light the fire from one end , it will take 60 minutes to get completely burn.

However, they do not burn at consistent speed (i.e it might be possible 1st 20% burn in 50 minutes and 80% can burn in 10 minutes).

So how could you measure 45 minutes ?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

What do you think with the below Picture ?

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

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

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?