Boolean Algebra Quiz

Given the function F(X,Y,Z) = XZ + Z(X'+ XY), the equivalent,most simplified Boolean representation for F is
  1. Z + YZ
  2. Z + XYZ
  3. XZ
  4. X + YZ
  5. None of the above

Z + YZ is WRONG. This expression can be simplified still further.

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Composed by David Belton - April 98