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Question

The equivalent expression for the following Boolean expression is/are

F(A,B,C,D)=B¯¯¯¯¯D+¯¯¯¯BCD+ABC+AB¯¯¯¯CD+¯¯¯¯B ¯¯¯¯¯D


A

F=¯¯¯¯¯D+¯¯¯¯BCD+ABC+AB¯¯¯¯CD

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B

F=¯¯¯¯¯D+(BC+AB)D+ABC

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C

F=¯¯¯¯¯D+¯¯¯¯BC+AB

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D

F=¯¯¯¯¯D+¯¯¯¯BC+AB

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Solution

The correct option is D

F=¯¯¯¯¯D+¯¯¯¯BC+AB


F=D+(B+¯¯¯¯B)+¯¯¯¯BCD+ABC+AB¯¯¯¯CD

=¯¯¯¯¯D+¯¯¯¯BCD+ABC+AB¯¯¯¯CD

=¯¯¯¯¯D+¯¯¯¯BCD+AB(C+¯¯¯¯CD)

=¯¯¯¯¯D+¯¯¯¯BCD+AB(C+D)

=¯¯¯¯¯D+(¯¯¯¯BC+AB)+ABC

=(¯¯¯¯¯D+D)(¯¯¯¯¯D+¯¯¯¯BC+AB)+ABC

F=¯¯¯¯¯D+¯¯¯¯BC+AB


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