What is the Surname of Barbie Doll?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

Why is 6 afraid of 7?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

What is so fragile that saying its name breaks it?

How many triangles are there in the picture below?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

How can one talk without saying a single word?

Can you find any error in the following sentence?

A taxi was standing outside a fort at night. A man came out of the fort, opened the gate and hit the taxi driver killing him instantly. He took all the money out of the meter and started running till he was caught by a local sheriff.