1) Binary numbers are made up of only two digits. What are they? a) 0 and 1 b) - 1 and 2 c) - 2 and 3 d) 8 and 9 2) In the decimal number system, how many digits are used? a) 2 b) 8 c) 10 d) 16 3) Computers use the binary system to process information. What is another name for this system? a) Base 2 b) Base 10 c) Base 8 d) Base 16 4) Which number system is commonly used in programming to represent colors? a) Binary b) Decimal c) Hexadecimal d) Octal 5) If ‘A’ in hexadecimal is equal to 10 in decimal, what is ‘F’ in decimal? a) 12 b) 15 c) 16 d) 20 6) What is the base of the octal number system? a) 2 b) 8 c) 10 d) 16 7) Which of the following numbers is written correctly in binary? a) 10102 b) 1101101 c) 2001 d) 987 8) How many unique symbols are used in the hexadecimal number system? a) 8 b) 10 c) 12 d) 16 9) What is the decimal equivalent of the binary number 101? a) 3 b) 5 c) 7 d) 10 10) What is the next number after 111 in binary? a) 110 b) 1000 c) 1010 d) 1111 11) Which number system is commonly used for memory addresses in computers? a) Binary b) Decimal c) Hexadecimal d) Octal 12) In binary, what does 1 + 1 equal? a) 0 b) 10 c) 11 d) 100 13) What does the term “bit” stand for in computer science? a) Binary integer term b) Basic information theory c) Binary digit d) Byte integration technique 14) If you convert the decimal number 13 to binary, what do you get? a) 1100 b) 1101 c) 1011 d) 1111 15) The decimal number 255 is the largest value represented by a single byte in binary. a) True b) False

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