Question

Find the truth table for the function $Y$ of $A$ and $B$ represented in the following figure.

• A.

  A	B	Y
  0 0 1 1	0 1 0 1	0 1 0 0

• B.

  A	B	Y
  0 0 1 1	0 1 0 1	1 0 1 1

• C.

  A	B	Y
  0 0 1 1	0 1 0 1	0 0 0 1

• D.

  A	B	Y
  0 0 1 1	0 1 0 1	0 1 1 1

Answer 1

The correct option is B

A	B	Y
0 0 1 1	0 1 0 1	1 0 1 1

$Y=A.B+\overline{B}$
So, the output will be as given in the below table.

A	B	Y
0 0 1 1	0 1 0 1	1 0 1 1

Hence, option (b) is correct.