It is not clear how much money, public and private, would be necessary in two states with famous fiscal problems.

The claim eventually became one of the most famous unsolved problems of mathematics.

However, there was little progress on Mazur's problem and a few other problems, which became famous open problems to mathematicians around the world.

It has been described as the World's most famous bouldering problem.

A famous problem is the normal Moore space question, a question in general topology that was the subject of intense research.

The solution of this famous problem is now generally admitted to be impossible.

The most famous problem of this type is Eight queens puzzle.

Some famous mathematical problems are illustrated by clever models.

He also conjured up a famous unsolved problem thought to have no answers other than the three he provided.

Without the benefit of any formal training, Ramanujan claims to have come close to a solution to the famous problem.