SOLUTION: Is the answer CD - invalid? If not, what is it and why? Thanks! Determine whether the following symbolized arguments are valid or invalid by identifying the form of each. In som

Question 975476: Is the answer CD - invalid? If not, what is it and why? Thanks!
Determine whether the following symbolized arguments are valid or invalid by identifying the form of each. In some cases the argument must be rewritten using double negation or commutativity before it has a named form.
(R ⊃ ∼T) � (D ⊃ T)
∼T ∨ T____
∼R ∨ ∼D

MT--valid.

CD--invalid.

CD--valid.

HS--valid.

DD--valid.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
It turns out that you'll use a destructive dilemma (abbreviation DD)

So this argument is valid.
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