Construct a Complete Truth Table for Each of the Following $\lor$

question 125

Essay

construct a complete truth table for each of the following propositions. Then, using the truth table, classify each proposition as a tautology, a contingency, or a contradiction.
Justify your answers by appeal to the meanings of those terms.
-[(Q ⊃ R) ⊃ (R ⊃ S)] ≡ ∼(∼Q $\lor$ S)

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Definitions:

Increased Profits

A situation where a company's earnings exceed its previous earnings over a certain period, indicating improved financial performance.

Rich Vein of Gold

Refers to a significant and high-quality deposit of gold ore.

Dividends

Earnings from a corporation distributed to its shareholders, usually from its profits.

Liability

Financial obligations or debts that a company owes to others, which must be settled over time through the transfer of assets, provision of services, or other economic benefits.