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Refer to the Following Formula: (∃X)[Mx • (∼Nc $\lor$

Question 69

Multiple Choice

refer to the following formula: (∃x) [Mx • (∼Nc $\lor$ ∼Ox) ] ≡ (Py • Pb)
-Which wffs below are not in the scope of '(∃x) '?

A) ∼(Py • Pb)
B) Mx
C) Nc
D) Mx • (∼Nc $\lor$ ∼Ox)
E) None of the above.

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