Computer Science - Class 11
Chapter 12 Class 11 - Boolean Algebra

The complementary Law states that:

(a) X+X=X


(b) X=X

(c) X+X=1


(d) X+Y = Y+X




The complementary law states that:

  • A.A’ = 0
  • A+A’ = 1

So, the correct answer is (c).


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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.