Discussion Forum

Que. Define the connective * for the Boolean variables X and Y as: X * Y = XY + X' Y'. Let Z = X * Y.
Consider the following expressions P, Q and R.

P: X = Y⋆Z
Q: Y = X⋆Z
R: X⋆Y⋆Z=1

Which of the following is TRUE?
a. Only P and Q are valid
b. Only Q and R are valid
c. Only P and R are valid
d. All P, Q, R are valid
Answer:All P, Q, R are valid
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