# WONDER #224: What Is Infinity?

Question **1** of **3**

## Which of the following is an example of an infinite decimal?

- lemniscate
- monkey theorem
- pi
- circumference

Question **2** of **3**

## What was the main idea of this Wonder?

- The universe is infinitely large.
- Infinity is the word used to describe something that goes on forever; it is used in several fields.
- According to the infinite monkey theorem, anything is possible.
- Pi is an infinite decimal.

Question **3** of **3**

## Who was the first person to use the infinity symbol?

- Isaac Newton
- RenÃ© DÃ©scartes
- Albert Einstein
- John Wallis

Check your answers online at https://www.wonderopolis.org/wonder/What-Is-Infinity.