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ISRO | ISRO CS 2016 | Question 7
  • Last Updated : 22 Mar, 2018

Consider the following gate network

Which one of the following gates is redundant?

(A) Gate No. 1
(B) Gate No. 2
(C) Gate No. 3
(D) Gate No. 4


Answer: (B)

Explanation: Output = w’ + w’z + z’xy
= w'(1 + z) + z’xy
= w’ + z’xy
From the expression, we can deduce that gate number 2 is redundant.
So, option (B) is correct.

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