Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202229 JulyMorning Shift
Exam
JEE Main
Year
2022
Date
29 July
Shift
Morning Shift
Subject
Mathematics
Chapter
Mathematical Reasoning

JEE Main 2022 · 29 July · Morning Shift · Mathematics · Mathematical Reasoning

The statement (p ∧ q) ⇒ (p ∧ r) is equivalent to

The statement (p∧q)⇒(p∧r)isequivalentto\left(p ∧ q\right) ⇒ \left(p ∧ r\right) is equivalent to

Options

  1. Aq⇒(p∧r)q ⇒ \left(p ∧ r\right)
  2. Bp⇒(p∧r)p ⇒ \left(p ∧ r\right)
  3. C(p∧r)⇒(p∧q)\left(p ∧ r\right) ⇒ \left(p ∧ q\right)
  4. D(p∧q)⇒r\left(p ∧ q\right) ⇒ r

Correct answer

D. (p∧q)⇒r\left(p ∧ q\right) ⇒ r

Step-by-step solution

Given,

(p∧q)⇒(p∧r)</p><p>UsingA⇒B≡ A∨B\left(p ∧ q\right) ⇒ \left(p ∧ r\right)</p><p>{Using A ⇒ B ≡ ~ A ∨ B}

= (p∧q)∨(p∧r)</p><p>UsingDemorgan′slaw (A∧B)≡ A∨ B= ~ \left(p ∧ q\right) ∨ \left(p ∧ r\right)</p><p>{Using Demorgan's law ~ \left(A ∧ B\right) ≡ ~ A ∨ ~ B}

=( p∨ q)= \left(~ p ∨ ~ q\right) ∨ \left(p ∧ r\right)</p><p></p><p>= \left(~ p ∨ \left(p ∧ r\right)\right) ∨ ~ q</p><p></p><p>= \left(~ p ∨ p\right) ∧ \left(~ p ∨ r\right) ∨ ~ q</p><p></p><p>= \left(~ p ∨ r\right) ∨ ~ q</p><p></p><p>= \left(~ p ∨ ~ q\right) ∨ r</p><p></p><p>= ~ \left(p ∧ q\right) ∨ r</p><p></p><p>= \left(p ∧ q\right) ⇒ r

Practice Mathematical Reasoning on Quantrex Academy →

More from Mathematical Reasoning

Negation of p ∧ (q ∧ ~ (p ∧ q)) is JEE Main 2023The statement ( p ∧ ( ~ q ) ) ∨ ( ( ~ p ) ∧ q ) ∨ ( ( ~ p ) ∧ ( ~ q ) ) is equivalent to… JEE Main 2023The negation of the statement ( ( A ∧ ( B ∨ C ) ) ⇒ ( A ∨ B ) ) ⇒ A is JEE Main 2023Among the two statements ( S _ 1 ): (p ⇒ q) ∧ (p ∧ (~ q)) is a contradiction and ( S _ 2… JEE Main 2023The converse of ((~ p) ∧ q) ⇒ r is JEE Main 2023The number of ordered triplets of the truth values of p, q and r such that the truth… JEE Main 2023The statement ~ [p ∨ (~ (p ∧ q))] is equivalent to JEE Main 2023The negation of the statement (p ∨ q) ∧ (q ∨ (~ r)) is JEE Main 2023The negation of ( p ∧ ( - q ) ) ∨ ( - p ) is equivalent to JEE Main 2023Negation of (p → q) → (q → p) is JEE Main 2023Among the statements (S1): (p ⇒ q) ∨ ((~ p) ∧ q) is a tautology (S2): (q ⇒ p) ⇒ ((~ p) ∧… JEE Main 2023Statement ( P ⇒ Q ) ∧ ( R ⇒ Q ) is logically equivalent to JEE Main 2023Which of the following statements is a tautology? JEE Main 2023The negation of the expression q ∨ ( ( ~ q ) ∧ p ) is equivalent to JEE Main 2023The number of values of r ∈ \ p, q, ~ p, ~ q\ for which ((p ∧ q) ⇒ (r ∨ q) ∧ ( (p ∧ r) ⇒… JEE Main 2023Consider: (S1): (p ⇒ q) ∨ (p ∧ (~ q)) is a tautology. (S2): ((~ p) ⇒ (~ q)) ∧ ((~ p) ∨ q)… JEE Main 2023 Full Mathematical Reasoning list Mathematical Reasoning JEE Maths PYQsJEE Mathematics PYQs All JEE Main PYQs