Which of the following is not a valid rule of Boolean Algebra? – McqOptions

MCQOPTIONS

1.	Which of the following is not a valid rule of Boolean Algebra?
A.	A + A' = A
B.	A ⋅ A = A
C.	A ⋅ A' = 0
D.	A + A' = 1
Answer» B. A ⋅ A = A

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