NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Mathematics
- Chapter
- Mathematical Reasoning
NTA Abhyas 2020 · Mathematics · Mathematical Reasoning
The statement (p ⇔ q) is not equivalent to
The statement $ \left(p ⇔ q\right) is not equivalent to
Options
- A
- B
- C
- D
Correct answer
D.
Step-by-step solution
Option is theorem hence \left(A\right)
Option \left( B\right) \left( p ⇔ q\right) means only or only
Which is same as \left(p ∧ q\right) ∨ \left( q ∧ p\right)
Option \left(C\right) \left( p ∨ q\right) ∧ \left( pv q\right)
∧ \left( \left(p ∧ q\right)\right)
Means \left(p ∨ q\right) does not happen. It means only or only happens
Option \left(D\right) ≡ \left( p ∨ q\right)∨ \left( \left( p ∧ q\right)\right)≡ \left( \left( p ∨ q\right) ⇒ \left( p ∧ q\right)\right)<br />but not equivalent to \left(p ∨ q\right) ⇒ \left( p ∧ q\right)
Option \left( B\right) \left( p ⇔ q\right) means only or only
Which is same as \left(p ∧ q\right) ∨ \left( q ∧ p\right)
Option \left(C\right) \left( p ∨ q\right) ∧ \left( pv q\right)
∧ \left( \left(p ∧ q\right)\right)
Means \left(p ∨ q\right) does not happen. It means only or only happens
Option \left(D\right) ≡ \left( p ∨ q\right)∨ \left( \left( p ∧ q\right)\right)≡ \left( \left( p ∨ q\right) ⇒ \left( p ∧ q\right)\right)<br />but not equivalent to \left(p ∨ q\right) ⇒ \left( p ∧ q\right)