1) What is the binary value of 13? a) 1001 b) 1101 c) 1110 d) 1011 2) What is the decimal value of the binary number 10101? a) 19 b) 20 c) 21 d) 22 3) Convert 111100₂ to decimal. a) 56 b) 60 c) 48 d) 52 4) Which binary number equals 31? a) 11101 b) 11011 c) 11111 d) 10111 5) What is 100000₂ in decimal? a) 16 b) 32 c) 64 d) 128 6) Which of the following is the binary for 23? a) 10111 b) 11001 c) 10010 d) 11100 7) 1010₂ + 0011₂ = ? a) 1101 b) 1001 c) 1110 d) 0111 8) 1101₂ + 0101₂ = ? a) 10010 b) 10100 c) 11100 d) 10000 9) 1010₂ − 0001₂ = ? a) 1011 b) 0101 c) 1001 d) 1101 10) Convert 100101₂ to decimal, then subtract 5 a) 32 b) 33 c) 34 d) 35

Binary conversions refresher quiz

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