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LOGICAL EXPRESSIONS In all the questions below, we consider generic propositions P and Q and R . Is it true that not ( n o

LOGICAL EXPRESSIONS
In all the questions below, we consider generic propositions P and Q and R.
Is it true that not(notP) is equivalent to P? Explain your answer using a
truth-table with three columns (one column for P, one column for notP, and
one column for not(notP)).
Consider the following expression: (P??notP)=>Q. Does its truth-value
depend on the truth-value of P? Why?
Write down truth-tables for the following expressions:
I. not(P??Q)
II. notPvvnotQ
III. not(PvvQ)
IV.notP??notQ
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