Boolean Algebra Quiz

Give the relationship that represents the dual of the Boolean property A + 1 = 1?
(Note: * = AND, + = OR and ' = NOT)
  1. A * 1 = 1
  2. A * 0 = 0
  3. A + 0 = 0
  4. A * A = A
  5. A * 1 = 1

A + 0 = 0 is WRONG. You failed to interchange the OR operator(+) with an AND operator(*), as dictated by the rules of duality.

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Composed by David Belton - April 98