Question: What should the pre - condition P be in each of the following ten correctness statements for the statement to be an instance of Hoare

What should the pre-condition P be in each of the following ten correctness statements for the statement to be an instance of Hoares axiom scheme? All variables are of type int.
P { z = x + y; } ForAll(z =1; z < x) x + y + z <100

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