question_answer

To get output 'I' at R, for the given logic gate circuit the input values must be- [JEE Main Online Paper (Held On 10-Jan-2019 Morning]

A) \[X=0,\text{ }Y=0\]               

B) \[X=1,\text{ }Y=0\]

C) \[X=0,\text{ }Y=1\]                  

D)   \[X=1,\text{ }Y=1\]

Correct Answer: B

Solution :

Truth Table

X	Y	\[\overline{X}\]	\[\overline{Y}\]	\[\overline{X}+Y\]	\[\overline{X.\overline{Y}}\]	R
0	0	1	1	1	1	0
1	0	0	1	0	0	1
0	1	1	0	1	1	0
1	1	0	0	1	1	0

\[\therefore \,\,\,X\text{ }=\text{ }1\]     \[Y=0\]