The output of the given combination gates represents:

Which one of the following will be the output of the given circuit?

The figure gives a system of logic gates. It can be found that to produce a high output $1$ at $R$, we must have,

The logic circuit shown below has the input waveforms $\mathrm{A}$ and $\mathrm{B}$, as shown.

Pick out the correct output waveform.

The above configuration is equivalent to the 

For the logic circuit given below, to produce a high output$1$ at $\mathrm{R}$, we must have

For the following logic circuit, 

$Y=0$ for $A=1, B=1, C=1$
$Y=0$ for $A=0, B=0, C=0$
$Y=1$ for $A=1, B=0, C=0$

The logic gate in the question-marked box will be,

Which logic gate is represented by the following logic gates?

Identify the logic operation carried out.