1) In binary, a 1 means “add this value” and a 0 means “don’t add it.” a) True b) False 2) The decimal number system is base 2. a) True b) False 3) Hexadecimal uses the digits 0–9 and the letters A–F. a) True b) False 4) Does the Binary Code 01000001 equal 65? a) True b) False 5) Binary numbers can be grouped in sets of 4 bits to convert them to hexadecimal. a) True b) False 6) The letter ‘A’ in hexadecimal represents the value 12. a) True b) False 7) ASCII is used to store colours in web design. a) True b) False 8) Binary is the only number system humans use for daily counting. a) True b) False 9) Does the Binary Code 00110010 equal 59? a) True b) False 10) Computers store all data—including text, images, and sound—using binary. a) True b) False 11) A byte is made up of 4 bits. a) True b) False 12) Computers use binary because they can only recognise ON and OFF signals. a) True b) False

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