When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Can it be possible to build a house that has all its four walls facing towards the South?

John Went to the nearby store in a Mall to buy something for her home. Below is the conversation between the two:

John: How much for the one?
Shopkeeper: It is $2
John: How much for the Eleven?
Shopkeeper: It is $4
John: How much for the Hundred?
Shopkeeper: It is $6.

What is John buying?

Forwards I am heavy, backward I am not. What am I?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

Can you write down eight eights so that they add up to one thousand?