The more of this there is, the less you see. What is it?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

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

Can you find the missing piece of the Porsche?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

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?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

Count the Triangle in the figure given below:

What is the centre of gravity?