Can We Prove That a Proposition Is True by Disproving

question 121

Multiple Choice

Can we prove that a proposition is true by disproving its contradictory?

• A)Yes, because the proposition must be true if its contradictory is false.
• B)Yes, but the proof would lack certainty.
• C)No, but we could prove it by disproving its contrary.
• D)No, but we could prove it by disproving its subcontrary.
• E)No, because both the proposition and its contradictory could be false.

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Definitions:

Visual Impairments

A range of conditions that affect the ability to see, including slight vision loss to total blindness.

Environmental Hazards

Potential sources of harm to health or safety originating in the environment, including physical, chemical, and biological factors, within indoor and outdoor settings.

Diuretics

Medications that help the body eliminate excess fluid by increasing urine production, used in the treatment of conditions like hypertension and edema.

Antiarrhythmics

Medications used to treat irregular heartbeats or arrhythmias that work by influencing the electrical conduction system of the heart.