Code breakers - part 1

The binary number system uses___numbers

• one

• two

• three

What numbers are used in the binary number system?

• 0-10

• 0-15

• 0-1

The base of __________ system of 10.

• Decimal

• Binary

• Octal

An electrical circuit that is on, or lit up, is represented by a

• 0
• 1

What is the place value of the digit 9 in the number 1629?

• hundreds

• tens

• ones

What is the binary system?

• The binary system is a base-10 numeral system that uses ten symbols.
• The binary system is a color coding system that uses red and blue.
• The binary system is a base-2 numeral system that uses two symbols, 0 and 1.

Which of these is the correct sequence for the place values for binary numbers?

• 1, 2, 4, 8, 16, 32, 64, 128
• 1, 2, 3, 4, 5, 6, 7, 8
• 0, 1

Computers can only understand 0s and 1s.

• True
• False

What is the point of binary?

• It represents how computers interpret electrical signals
• Because we like to make you do extra maths ;-D
• Because it describes star systems

What kind of 'base' system is binary known as?

• Base 12

• Base 2

• Base 10