GATE | GATE-CS-2005 | Question 90

Consider the following circuit.
GATECS2005Q14
Which one of the following is TRUE?
(A) f is independent of X
(B) f is independent of Y
(C) f is independent of Z
(D) None of X, Y, Z is redundant


Answer: (D)

Explanation: [(XY’)’ NAND (YZ)’]= [(XY’)’ .(YZ)’]’

=XY’+YZ

SO NONE OF X,Y,Z IS REDUNDANT



Ans (D)

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