If A is any statement, then which of the following is a tautology?
A. A ∧ F
B. A ∨ F
C. A ∨ ¬A
D. A ∧ T
Answer:C
If A is any statement, then which of the following is a tautology?
A. A ∧ F B. A ∨ F C. A ∨ ¬A D. A ∧ T
Explanation: A ∨ ¬A is always true.