Question

All fish swim.
A barracuda is a fish.
Conjecture: Barracudas swim.

Use deductive reasoning to verify the conjecture, or provide a counterexample if the conjecture is false.

A.
true; law of detachment
B.
true; law of syllogism
C.
false; barracudas do not swim
D.
false; only some barracudas swim

Answer 1

P: it is a fish
Q: it swims

P==>Q

A barracuda is a fish --> P is true

P==>Q
P
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therefore, ? @Captainpoptart