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Saturday, 31 October

JEE Main 2020 · MathsMultiple choiceTwo statementsMediumConceptual

JEE Main 4 September 2020, Shift 1, Maths Q70

Question 70 of 75 in this shift, Maths question 20 of 25.

Given the following two statements : (S1):(q∨p)→(p↔∼q)(S_1) : (q \vee p) \to (p \leftrightarrow \sim q) is a tautology. (S2):∼q∧(∼p↔q)(S_2) : \sim q \wedge (\sim p \leftrightarrow q) is a fallacy. Then :
  1. (1)both (S1)(S_1) and (S2)(S_2) are correct.
  2. (2)only (S1)(S_1) is correct.
  3. (3)only (S2)(S_2) is correct.
  4. (4)both (S1)(S_1) and (S2)(S_2) are not correct.Official answer

Official answer

Option 4

NTA final key (Sep 2020).

Chapter
Mathematical Reasoning
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.