NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Mathematics
- Chapter
- Mathematical Reasoning
NTA Abhyas 2020 · Mathematics · Mathematical Reasoning
Let ⊕ and ⊗ are two mathematical operators. If p ⊕ (p ⊗ q) is not a...
Let and are two mathematical operators. If \left(p ⊗ q\right)⊕⊗ can be
Options
- A and respectively
- B and respectively
- C and respectively
- DNone of these
Correct answer
B. and respectively
Step-by-step solution
\left(A\right)p ∨ \left(p ⇒ q\right) is false only if p ∨ \left(p ⇒ q\right)pis true and \left( p ∨ q\right) is false which is never possible simultaneously. Hence, is a tautology
\left(B\right)p ⇒ \left(p ∧ q\right) is false only if is true & is false which is possible when is true & is false. Hence, is not a tautology
\left(B\right)p ⇒ \left(p ∧ q\right) is false only if is true & is false which is possible when is true & is false. Hence, is not a tautology