Question

If A, B and C are the inputs of a full adder then the sum is given by __________

(a) A AND B AND C

(b) A OR B AND C

(c) A XOR B XOR C

(d) A OR B OR C

The question was posed to me in unit test.

I would like to ask this question from Half Adder & Full Adder topic in section Arithmetic Circuits of Digital Circuits

Answer 1

Correct option is (c) A XOR B XOR C

The explanation is: If A, B and C are the inputs of a full adder then the sum is given by A XOR B XOR C.