Instructions: for 11-20, Use Indirect Truth Tables to Determine, for Each

Essay

Instructions: For 11-20, use indirect truth tables to determine, for each given set of propositions, whether it is consistent. If the set is consistent, provide a consistent valuation.
-(L • N) $\lor$ I
L ≡ ∼K
K ⊃ (I ≡ ∼M)
(J $\lor$ K) • ∼N