1) Consider a three-qubit system (Alice, Bob, Chas). A "W-state” would be W) = udd) + dud) + ddu). Alice makes a σ measurement. What is the probability that the remaining Bob-Chas 2-qubit system is entangled? 2) A "GHZ-state” is GHZ) = |uuu) + ddd). Alice makes a σx measurement. What is the probability that the remaining Bob-Chas 2-qubit system is entangled?