Binary, Denary and Hexadecimal

What are the only two numbers you can use in binary?

• 0 and 1
• 1 and 2
• 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
• 1, 2, 4, 8, 16

How many bits make a byte?

• 2

• 4

• 8

• 16

Convert 128 to binary

• 10000000
• 01111110
• 10000001
• 11001100

Convert the Hex number B9 to binary.

• 10111001
• 10111000
• 10111101
• 10101001

Convert the Hex number 1F to binary.

• 00111111
• 00001111
• 00010111
• 00011111

Convert the binary number 01010101 to Hex

• 44
• 55
• 66
• 77

Convert the binary number 11000011 to Hex

• 11

• A2

• C3

• D4

Which number system are these examples of?
2A    7F    1C

• Binary
• Denary
• Hexadecimal

Which number system are these examples of?
1011      001011      10110101

• Binary
• Denary
• Hexadecimal

What is 1111 converted into denary?

• 15
• 16