why number 8549176320 is one of a kind?

I have branches, but no fruit, trunk or leaves. What am I?

What always comes into a house through the keyhole?

What came first, the chicken or the egg?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

A pet show was happening in my locality. I went down along with my kids. In that show, I noticed that all except two of the entries were cats. All except two were dogs and all except two were Monkeys.

Can you find out how many of each animals were present in that pet show?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

Find the hidden panda in the image below.

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?