To get an output $1$, the input $\mathrm{ABC}$ should be:

The circuit-shown here is logical equivalent of:

Which of the following will have an output of $1$:

(a)

  (b) 

(c) 

(d)

The logic symbols shown here are logically equivalent to:

The combination of the gates shown will produce

The combination of the gates sown will produce:

Which of the following represents correctly the truth table of configuration of gates shown here

The truth table for the following combination of gates is:

The combination of the gates shown represents: