A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Count the number of triangles in the given picture.

Client Dempsey living in one of the East Coast states of the U.S. was talking to Landon Donovan, who was living in the West Coast state of the U.S.

Dempsey: What time is it?
Donovan: Wow, It is the same time here.

How is this possible?

I cannot talk, but I always reply when spoken to. What am I?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?