What has many keys but can’t open a single lock?

The more you take me, the more you leave me behind.
Who Am I?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What is the Surname of Barbie Doll?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

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

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?