- 21. The binary number 110011 equals a. 96 b. 59 C. 35 22. The decimal number 99 equals 0111 0001 0111 1000 0101 0101 a. b. C. 24. A half-adder circuit contains a(n) (carry out) output. a. OR b. NOR C. XNOR 25. A half-adder circuit has One Two Three in decimal. a. b. C. in binary. 23. The difference between the binary numbers 10101 and 110 is 10011 10000 a. b. 1011 c. 1001 d. 51 e. 49 d. e. 0110 0011 0101 1101 d. e. 1111 gate feeding the sum output and an AND gate which generates the Co d. XOR e. NOT (inverter) input(s) and two outputs. d. e. Four Five