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Question: Answered & Verified by Expert
In Boolean algebra, $\overline{\overline{\mathrm{A}} \cdot \overline{\mathrm{B}}} \quad$ is equal to
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Options:
  • A $\overline{\mathrm{A}} \cdot \overline{\mathrm{B}}$
  • B $\overline{\mathrm{A}}+\overline{\mathrm{B}}$
  • C A.B
  • D $\mathrm{A}+\mathrm{B}$
Solution:
1870 Upvotes Verified Answer
The correct answer is: $\mathrm{A}+\mathrm{B}$
$\overline{\overline{\mathrm{A}} \overline{\mathrm{B}}}$ in Boolean algebra, can be written as
$\overline{\overline{\mathrm{A}} . \overline{\mathrm{B}}}=\overline{\overline{\mathrm{A}}}+\overline{\overline{\mathrm{B}}}=\mathrm{A}+\mathrm{B}$

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