Multiple choice

Using De Morgan's theorem, find the solution of the expression ((A + B)' + C')'.

  1. (A + B + C)(A . B . C)

  2. (A + B) . C

  3. (A + B)' . C

  4. ((A + B) . C)'

  5. (A + B) + C
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

((A + B)' + C')' = ((A' . B' + C')' = ((A' . B')' . (C')') = (((A')' + (B')') . C) = (A + B) . C

So, this is the correct answer.

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