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Binary Addition Question & Answers

December 20, 2021 By WatElectronics

This article lists 100 Binary Addition MCQs for engineering students. All the Binary Addition Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up their fundamentals on Binary Addition.

A digital or electronics system mainly relies on the binary representation that is in logic 0 or logic 1 form.  In other words, the process of representing the numeric value in logic binary 0’s and 1’s is called binary number or binary number representation.

There are 3 main tasks that can be performed on binary number systems namely binary addition, binary multiplication & binary subtraction, using logic gates and IC’s.

A device that performs addition on binary bits is called a binary adder. Binary addition is represented in base 2. The 2 main components of a binary adder include opcode and operator which are responsible for performing binary addition. A binary adder requires a minimum of 2 bits to perform addition.

For example a+b where a,b are opcode and “+” operand. These binary adders are further divided into half-bit and full-bit binary adders. Where a half adder has 2 inputs (A, B) and 2 outputs (Cout, Carryout) and a full adder has 3 inputs (A, B, Cin) and 2 outputs (Cout, Carryout). The resultant output obtained from binary addition is normalized and represented as a Boolean equation using K-map and logic gates. These binary adders are commonly implemented in counters and arithmetic circuits.

1). A binary operation is performed on minimum of ____ operands?
HintOdd value.
2). Which of the following are the terms used while performing binary calculation?
Hinta,b and symbol + is called?
3). Identify the operand from the example 2+3=5?
HintInput values.
4). Identify the operator from the example a+b?
HintSymbol representation in a+b.
5). A binary addition is performed using _____ symbol?
HintAdd symbol.
6). Which of the following are binary operations?
HintBinary arithmetic operations.
7). A binary addition calculation is performed similar to ____ type of system?
HintDecimal base representation.
8). A binary addition is represented using ____ base value?
HintMinimum value.
9). How many digits are used in a binary addition?
HintMinimum value.
10). Logic 0 in binary operation represents ____ state of a digital circuit?
HintAn open circuit that does not allow current to flow.
11). Logic 1 in binary operation represents ____ state of a digital circuit?
HintA short circuit that allows current to flow.
12). In binary addition, what is the output of 0+0?
HintLogic low.
13). In binary addition, what is the output of 0+1?
HintLogic high.
14). In binary addition, what is the output of 1+0?
HintLogic high.
15). In binary addition, what is the output of 1+1?
HintLogic low.
16). In how many steps binary addition is performed?
HintEven number of steps.
17). Which of the following is the first step of binary addition of 101 + 101?
HintSelection of mint terms.
18). Which of the following is the second step of binary addition of 101 + 101?
HintPerform carry operation.
19). Which of the following is the third step of binary addition of 101 + 101?
HintPerform addition.
20). Which of the following is the fourth step of binary addition of 101 + 101?
HintPerform addition of all terms.
21). How many optional steps are performed in binary addition?
HintUni step.
22). Identify the binary addition output of 10001 + 11101=_______?
HintThe binary addition output of 10001 + 11101=101110.
23). Identify the binary addition output of 10111 + 110001=_______?
HintThe binary addition output of 10111 + 110001=1001000.
24). Which of the following binary digit represents positive value?
HintLogic low.
25). Which of the following binary digit represents negative value?
HintLogic high.

Binary Addition  Interview Questions and Answers

26). Identify the 1’s complement of 1111 & -1101?
Hint+1111 = 01111; -1101 = 10010 therefore (00001 +1 =?)
27). Identify the 1’s complement of -1010 & -0011?
Hint1010 = 10101(1’s complement); 0011 = 11100 (1’s complement); 1001+1 =10010=?
28). How many digits are used in decimal number system compared to binary system?
HintEven number.
29). Which of the following is the base value of decimal number system?
HintDecimal in number form is represented as?
30). A binary number -1101 is represented in _____ binary form?
HintThe binary number -1101 is represented as 1101 in binary form where the “–“ is represented as 1.
31). A binary number 1101 is represented in _____ binary form?
HintA binary number 1101 is represented as 01101 in binary form.
32). Which of the following is the correct representation of binary number 01110?
Hint+01110 is the correct representation of binary number 01110.
33). Which of the following term represents the negative value of a binary number -1010?
HintA quantity which has limit.
34). Which of the following is the MSB bit of 10100 binary number?
HintLogic high.
35). Which of the following is the LSB bit of 10100 binary number?
HintLogic low.
36). MSB bit in binary number is abbreviated as ________?
HintMSB bit in binary number is abbreviated as Most significant bit.
37). LSB bit in binary number is abbreviated as ________?
HintLSB bit in binary number is abbreviated as least significant bit.
38). Which of the following is the carry bit obtained from “00” binary addition?
HintLogic low.
39). Which of the following is the carry bit obtained from “01” binary addition?
HintLogic low.
40). Which of the following is the carry bit obtained from “10” binary addition?
HintLogic low.
41). Which of the following is the carry bit obtained from “11” binary addition?
HintLogic high.
42). A binary addition can be digital represented using ___ components?
HintElectronic devices.
43). Which of the following are the logic gates used in binary half adders?
HintBasic and universal gates.
Read more about Half Adder.
44). Which of the following is the 4bit binary representation of number “1”?
HintWrite 1 under 1 of (8,4,2,1) for representing number “1”.
45). Which of the following is the 4bit binary representation of number “2”?
HintWrite 1 under 2 of (8,4,2,1) for representing number “2”.
46). Which of the following is the 4bit binary representation of number “3”?
HintWrite 1 under 2,3 of (8,4,2,1) for representing number “3”.
47). Which of the following is the 4bit binary representation of number “4”?
HintWrite 1 under 4 of (8,4,2,1) for representing number “4”.
48). Which of the following is the 4bit binary representation of number “5”?
HintWrite 1 under 4,1 of (8,4,2,1) for representing number “5”.
49). Which of the following is the 4bit binary representation of number “6”?
HintWrite 1 under 4,2 of (8,4,2,1) for representing number “6”.
50). Which of the following is the 4bit binary representation of number “7”?
HintWrite 1 under 4,2,1 of (8,4,2,1) for representing number “7”.

Binary Addition Important Questions for Interviews

51). Which of the following is the 4bit binary representation of number “8”?
HintWrite 1 under 8 of (8,4,2,1) for representing number “8”.
52). Which of the following is the 4bit binary representation of number “9”?
HintWrite 1 under 8,1 of (8,4,2,1) for representing number “9”.
53). Which of the following is the 4bit binary representation of number “10”?
HintWrite 1 under 8,2 of (8,4,2,1) for representing number “10”.
54). Which of the following is the 4bit binary representation of number “11”?
HintWrite 1 under 8,2,1 of (8,4,2,1) for representing number “11”.
55). Which of the following is the 4bit binary representation of number “12”?
HintWrite 1 under 8,4 of (8,4,2,1) for representing number “12”.
56). Which of the following is the 4bit binary representation of number “13”?
HintWrite 1 under 8,4,1 of (8,4,2,1) for representing number “13”.
57). Which of the following is the 4bit binary representation of number “14”?
HintWrite 1 under 8,4,2 of (8,4,2,1) for representing number “14”.
58). Which of the following is the 4bit binary representation of number “15”?
HintWrite 1 under 8,4,2,1 of (8,4,2,1) for representing number “15”.
59). The binary value representation of 15 is “1111” this value is represented by assigning ___?
HintThe binary value representation of 15 is “1111” this value is represented by assigning weights (example: 8,4,2,1 = 4 bit representation).
60). Which of the following among weight (8,4,2,1 = 4 bit representation) is LSB bit?
HintUni bit.
61). Which of the following among weight (8,4,2,1 = 4 bit representation) is MSB bit?
HintLeft most bit.
62). Which of the following is the value of 1’s complement of binary value 0001?
HintInverse of 0001.
63). Which of the following is the value of 1’s complement of binary value 0011?
HintToggle of 0011
64). Which of the following is the value of 1’s complement of binary value 1111?
HintToggle of 1111.
65). Which of the following is the value of 1’s complement of binary value 0000?
HintInverse of 1111.
66). Which of the following is the value of 1’s complement of binary value 0010?
HintInverse of 1101.
67). Which of the following is the value of 1’s complement of binary value 0100?
HintInverse of 0100.
68). Which of the following is the value of 1’s complement of binary value 0101?
HintInverse of 0101.
69). Which of the following is the value of 1’s complement of binary value 0110?
HintInverse of 0110.
70). Which of the following is the value of 1’s complement of binary value 0111?
HintInverse of 1000.
71). Which of the following is the value of 1’s complement of binary value 1001?
HintInverse of 1001.
72). Which of the following is the value of 1’s complement of binary value 1010?
HintInverse 1010.
73). Which of the following is the value of 1’s complement of binary value 1011?
HintInverse of 1011.
74). Which of the following is the value of 1’s complement of binary value 1100?
HintInverse of 1100.
75). Which of the following is the value of 1’s complement of binary value 1101?
HintInverse of 1101.

Binary Addition Quiz Questions and Answers.

76). Which of the following is the value of 1’s complement of binary value 1110?
HintInverse of 1110.
77). Which of the following is the 2’s complement of -7?
HintComplement of 1000.
78). Which of the following is the 2’s complement of -7+6=?
Hint00111+00110=?
79). In binary 2 bit adder, which of the following is the output of AND gate with input 0,0?
HintLogic low.
80). In binary 2 bit adder, which of the following is the output of AND gate with input 0,1?
HintLogic low.
81). In binary 2 bit adder, which of the following is the output of AND gate with input 1,0?
HintLogic low.
82). In binary 2 bit adder, which of the following is the output of AND gate with input 1,1?
HintLogic high.
83). In binary 2 bit adder, which of the following is the output of XOR gate with input 1,1?
HintLogic low.
84). In binary 2 bit adder, which of the following is the output of XOR gate with input 1,0?
HintLogic high.
85). In binary 2 bit adder, which of the following is the output of XOR gate with input 0,0?
HintLogic low.
86). Identify the logic gate displayed below used in 2 bit adder?
Logic Gate

Logic Gate

HintGate that performs product of terms.
87). Identify the logic gate displayed below used in 2 bit adder?
Logic Gate

Logic Gate

HintLogic gate designed with combination of AND and OR gate.
88). Identify the logic circuit displayed below?
Logic Circuit

Logic Circuit

Hint2 inputs are provided to logic gates.
89). Identify the logic circuit displayed below?
Logic Circuit

Logic Circuit

HintOdd number of inputs.
90). An XOR logic gate is a combination of ____ logic gates?
HintBasic gates.
91). Which of the following is the output of OR gate with input 00?
HintLogic low.
92). Which of the following is the output of OR gate with input 01?
HintLogic high.
93). Which of the following is the output of OR gate with input 10?
HintLogic high.
94). Which of the following is the output of OR gate with input 11?
HintLogic low and high.
95). How many types of binary adders exist?
HintDual.
Read more about Full Adder.
96). Which of the equation of SUM in a 2bit adder with inputs A,B?
HintUses universal gate to obtain SUM equation.
97). Which of the equation of CARRY in a 2bit adder with inputs A,B?
HintBasic gate is used to obtain CARRY equation.
98). Which of the equation of SUM in a 3bit adder with inputs A,B,Cin?
HintUniversal logic gates are used to obtain SUM equation.
99). Which of the equation of CARRY in a 3bit adder with inputs A,B,Cin?
HintBoth basic and universal logic gates are used for obtaining CARRY equation.
100). Which of the following method is used for representing the 2bit binary adder?
HintBinary values representation methods.
Read more about K-Map.
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