How many times can you subtract the number two from the number fifty?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

I have no life, but I can die. 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?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

What is the Surname of Barbie Doll?

What have one eye but still cannot see?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?