Mux output

Question

Answer 1

$f = D.\overline{A}.\overline{B}C + 1.\overline{A}.B.\overline{C} + D.A.\overline{B}.\overline{C} + D.A\overline{B}C + 1.AB\overline{C}$

$f = \overline{A}.\overline{B}CD + (D + \overline{D})\overline{A}.B.\overline{C} + A.\overline{B}.\overline{C}D + A\overline{B}CD + AB\overline{C}(D+\overline{D})$

$f = \overline{A}.\overline{B}CD + \overline{A}.B.\overline{C}D + \overline{A}.B.\overline{C}.\overline{D} + A.\overline{B}.\overline{C}D + A\overline{B}CD + AB\overline{C}D + AB\overline{C}.\overline{D}$

$f = \sum(3,5,4,9,11,13,12)$

Hence, Option (D) is correct.

Answer 2

ans is d.

Comments

But D=1 then only we take that input??

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@vaishali see the ans now....

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Yes...