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To get an output of 1 from the circuit shown in the figure the input must be:

Options

  1. Aa = 0 , b = 0 , c = 1
  2. Ba = 1 , b = 0 , c = 0
  3. Ca = 1 , b = 0 , c = 1
  4. Da = 0 , b = 1 , c = 0

Correct answer

C. a = 1 , b = 0 , c = 1

Step-by-step solution

Output of OR gate must be 1 and c = 1 So, a = 1 ,   b = 0 or a = 0 ,   b = 1

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