MCA Entrance Previous Year Question Bank

The simplified form of Boolean Expression:

$\overline{A}BC+ABC$ is ______.

The simplified form of Boolean expression AB + AB' is _____________.

$A.\text{If }(12P{)}_3=(123{)}_p,\text{then value of }p\text{is infeasible.}$

$B.\text{The simplified sum of product form of the Boolean expression is }(P+\overline{Q}+\overline{R})(P+\overline{Q}+R)(P+Q+\overline{R})\text{is }(P+\overline{Q}).$

C. The minimum number of D flip-flops needed to design a mod (258) counter is 8.

Choose the correct answer from the options given below:

If 𝑤,x,𝑦,𝑧 are Boolean variables, then which of the following is incorrect?

If ⨁ and ⨀ denote the exclusive OR and exclusive NOR operations, respectively, then which one of the following is not соrrесt?

Let A' represent complement of A. Which of the following Boolean expression is/are true?

(A) A + AB = A (B) (A + B)' = A'B'

(C) (A')' = A (D) (AB)' = A' + B'

Choose the correct answer from the options given below:

What should be the output of the following boolean expression after simplifying it to a minimum number of variables?

$$a^{\prime }{b}^{\prime }+ab+a^{\prime }b$$