What is the Surname of Barbie Doll?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Can you start the fire using two pieces of wood?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Can you find the key in the picture below?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

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?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?