Which identity is correct?

  1. A · A' = 1
  2. A + 1 = 1
  3. A · 1 = 1
  4. A + A' = 0
Answer

B) A + 1 = 1

Null law: anything OR 1 is 1. A + A' = 1, A·A' = 0 and A·1 = A. SLO CS-11-A-01

Computer Science MCQ · More Unit 1: Computer Systems MCQs · Practise