What is the Surname of Barbie Doll?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

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?

Can you fill the blank with the correct number?

6 30 870 756030 _____

Before Mount Everest was discovered, what was the highest mountain in the world?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

What number should come in place of the question mark below?

You need to move three matchsticks to form three squares. Can you do it?