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

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A = 0, B = 1, C = 0

A = 1, B = 0, C = 0

A = 1, B = 0, C = 1

A = 1, B = 1, C = 0

answer is C.

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Detailed Solution

Y = (A+B).C . In order to get Y=1, C needs to be 1 and either or both of A and B needs to be equal to 1. Hence (3) is correct

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