Which of the following is false?(a) x+y=y+x(b) x.y=y.x(c) x.x’=1(d) x+x’=1I had been asked this question during an online interview.I need to ask this question from Fundamental Concepts & Postulates topic in chapter Boolean Algebra and Logic Circuits of Computer Fundamentals

Which of the following is false?(a) x+y=y+x(b) x.y=y.x(c) x.x’=1(d)

1.	Which of the following is false?(a) x+y=y+x(b) x.y=y.x(c) x.x’=1(d) x+x’=1I had been asked this question during an online interview.I need to ask this question from Fundamental Concepts & Postulates topic in chapter Boolean Algebra and Logic Circuits of Computer Fundamentals
Answer» Right answer is (C) x.x’=1 The explanation is: The first and second option describes the COMMUTATIVE law. The fourth option holds true since if x=1, then x’=0, and x+x’=1. Third option is incorrect because on multiplication of a boolean VALUE with its COMPLEMENT the result will always be 0.

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