engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Digital Logic Number Representations and Computer Arithmetic Minimization of Boolean Expression
Let A' represents complement of A. Which of the following boolean expressions is/are true?
(A). A + AB = A
(B). (A + B)' = A'B'
(C). (A')' = A
(D). (AB)' = A' + B'
Choose the correct answer from the options given below:
1
(A), (B) and (D) only.
2
(A) and (D) only.
3
(A), (B), (C) and (D)
4
(B) and (D) only.