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1)

The output  F of the logic  circuit given below

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A) X+¯Y.Z

B) (Y+Z).X

C) (¯Y+Z)+X

D) X+¯Y+Z

Answer:

Option A

Explanation:

 

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 Let.s  name intermediate  states as a and b as shown in figure.

 Now,       a=¯Y

 b=Za=z¯y

 F=b+X=Z¯Y+X