If $A = 100101$ and $B = 110110$ are applied to $X-NOR$ gate,then the output will be

When three $NAND$ logic gates are connected as shown in the figure,then the logic gate equivalent to the circuit is

In the given circuit,when $A=1, B=1$,the values of $X$ and $Y$ respectively are:

The output of the circuit is low (zero) for: $(A) \ X = 0, Y = 0$,$(B) \ X = 0, Y = 1$,$(C) \ X = 1, Y = 0$,$(D) \ X = 1, Y = 1$. Choose the correct answer from the options given below:

The truth table for the given circuit is

What are basic gates and universal gates?