# Math

It's all starting to add up. These are the best Math questions around, and we're positive that you'll derive a lot of fun from answering them. Don't forget to make it count.

## What algebraic system taught in present-day schools is one of the legacies of the philosopher RenE Descartes to which he lent his name?

## How many square feet are there in a square yard?

## What is the square root of 225?

## How many equal sides does an icosahedron have?

## What is the square root of one quarter?

## What may be mixed, complex or vulgar?

## How many sides does an “Enneadecagon” have?

## What digit did Arab mathematician al-Khwarizmi give to the West around 800 B/B.?

## What was the name of the guest guitarist on Michael Jackson’s Dangerous album?

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