# WONDER #1869: How Does the Binary System Work?

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

## The binary system is a base-what system?

- one
- two
- ten
- twenty

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

## 1010 is a binary number equal to which decimal number?

- 1,000
- 1,010
- 10
- 5

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

## The base-2 system is based upon powers of what?

- eight
- ten
- four
- two

Check your answers online at https://www.wonderopolis.org/wonder/how-does-the-binary-system-work.