JEE Main 17 March 2021 Shift 1 Solved Paper

We can find the output of given combination of gates using Boolean algebra. Consider the given figureThe output Y=A⋅B
which is the expression for NAND gate.
Alternate method
We can find the output of given combination of gates using truth table. Consider the given figure

A	B	Y1=A⋅B	Y=A⋅B
0	0	0	1
0	1	0	1
1	0	0	1
1	1	1	0

The above truth table shows the output of NAND gate.