Boolean Algebra Quiz

Simplification of the Boolean expression (A + B)'(C + D + E)' + (A + B)' yields which of the following results?
  1. A + B
  2. A'B'
  3. C + D + E
  4. C'D'E'
  5. A'B'C'D'E'

A + B is WRONG. Consider applying the property x + xy = x.

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Composed by David Belton - April 98