Question: Let p , q , and r be propositional variables. Which of the following expressions are NOT correct formulas of propositional logic? Select all that

Let p,q, and r be propositional variables. Which of the following expressions are NOT correct formulas of propositional logic? Select all that apply.
qharrharrr
-(q??(p??-(q??r)))
((-rvv)-p)
-p-q-r
Let p,q, and r be propositional variables. Which of the following

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