Binary Number System Quiz

What is the binary number system made of?

• 0–9

• Letters

• 0 and 1

• Pictures

What number does the binary 101 represent?

• 3

• 4

• 5

• 6

How many different numbers can you represent using 3 binary digits (bits)?

• 5

• 6

• 7

• 8

What is the decimal value of binary 010?

• 1

• 2

• 3

• 4

Which of the following is NOT a binary number?

• 100

• 110

• 111

• 123

Why do computers use binary?

• It’s fun to use

• Computers only understand on and off

• They don’t like big numbers

• They can’t read

Which of these is an example of something that works like binary?

• A light switch

• A car engine

• A bicycle

• A book

When you press a key on a computer keyboard, what happens?

• The computer guesses the letter

• The computer stores the letter in pictures

• The computer stores it using 0s and 1s

• The computer saves it in a rainbow

Which device uses binary to work?

• A toaster

• A smartphone

• A whiteboard

• A backpack

How does your phone store pictures and music?

• As drawings

• As words

• As binary numbers

• As sound waves