Determine Whether the Given Proposition Is a Logical Truth of PL

question 83

Essay

determine whether the given proposition is a logical truth of PL or not. If it is a logical truth, provide a proof. If it is not a logical truth, provide a false valuation.
-[(K ⊃ L) ⊃ (M ⊃ N)] ⊃ [(L • M) ⊃ N]

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Definitions:

Immediate Family

The closest kin group including the individual’s parents, siblings, spouse, and children.

Nutrients And Oxygen

are essential elements required by living organisms to sustain life, with oxygen needed for respiration and nutrients for various metabolic processes.

Placenta

An organ that develops in the uterus during pregnancy, providing oxygen and nutrients to and removing waste from the fetus through the umbilical cord.

Embryo

the developing human organism from about 2 weeks after fertilization through the second month