# Top 10 mathematics facts

Selected as the most interesting among mathematics related questions in

Mathematics quiz
## How many edges does a Möbius strip have?

One. The Möbius strip is a surface with only one side and only one boundary component (edge). A line drawn starting from the seam down the middle will meet back at the seam but at the "other side". If continued the line will meet the starting point and will be double the length of the original strip.

Created by: globalquiz.org

## If Earth's radius was larger by 1 meter, how much longer would its equator be?

By approx 6 meters. For each circle, the length of the circumference is c=2πr. Hence, if a radius grows by 1 meter, the circumference grows by 2 π meters - no matter what the initial value of radius was.

Created by: SpikeMe

## Which numeral system was in use in ancient Sumer and Babylon?

Sexagesimal. Remnants of highly composite sexagesimal system are in use even today for measuring angles, geographic coordinates and especially time. An hour of time is divided into 60 minutes, which in turn are divided into 60 seconds.

Created by: smyru

## Who invented roulette?

Blaise Pascal. In 1645, brilliant mathematician Blaise Pascal invented roulette based on his mathematical interest in probability calculus. Initially, there was no "zero" field in the game, it was added later to increase the profits of the casinos.

Created by: Katarzyna Dąbrowska

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