1.

In order to obtain an output `Y=1` form the circuit of fig. the inputs must be A. `A=1,B=0,C=0`B. `A=1,B=0,C=1`C. `A=1,B=1,C=0`D. `A=0,B=1,C=0`

Answer» Correct Answer - B
Here `Y=(A+B).C`
`|(A,B,C, Y=(A+B).C),(0,0,0,0),(1,0,0,0),(0,1,0,0),(0,1,0,0),(0,1,1,1),(1,0,1,1),(1,1,1,1)|`
`C` should be `1` either `A` and `B` or both `A` and `B` are `1`.
therefore, `A=1,B=0,C=1`


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