NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Mathematics
- Chapter
- Mathematical Reasoning
NTA Abhyas 2020 · Mathematics · Mathematical Reasoning
If p and q are two logical statements, then p ⇒ (q ⇒ p) is...
If and are two logical statements, then
Options
- A
- B
- C
- D
Correct answer
B.
Step-by-step solution
p ⇒ \left(q ⇒ p\right) ≡ p ∨ \left( q ∨ p\right)
∨ \left( q\right) ≡ tp ⇒ \left(q ⇒ p\right)p ⇒ \left(p ⇒ q\right) is false when is true and is false
≡ p ∨ \left(p ∨ q\right) ∨ qt ∨ q ≡ tp ⇒ \left(p ∧ q\right)pqp ⇒ \left(p ⇔ q\right) is false when is true and is false
∨ \left( q\right) ≡ tp ⇒ \left(q ⇒ p\right)p ⇒ \left(p ⇒ q\right) is false when is true and is false
≡ p ∨ \left(p ∨ q\right) ∨ qt ∨ q ≡ tp ⇒ \left(p ∧ q\right)pqp ⇒ \left(p ⇔ q\right) is false when is true and is false