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JEE Main202313 Apr 2023Evening ShiftMathematicsMathematical ReasoningActual

The statement ( p ∧ ( ~ q ) ) ∨ ( ( ~ p ) ∧ q ) ∨ ( ( ~ p ) ∧ ( ~ q ) ) is equivalent to _ _ _ _ _

Options

  1. A~ p ∨ q
  2. B~ p ∨ ~ q
  3. Cp ∨ ~ q
  4. Dp ∨ q

Correct answer

B. ~ p ∨ ~ q

Step-by-step solution

Given, ( p ∧ ( ~ q ) ) ∨ ( ( ~ p )   ∧   q )   ∨ ( ( ~ p )   ∧   ( ~ q ) ) = ( ( ~ p )   ∧   q )   ∨ ( ( ~ p )   ∧   ( ~ q ) ) ∨ ( p ∧ ( ~ q ) ) = ~ p ∧ q ∨ ~ q ∨ p ∧ ~ q We know that ~ A ∨ A = T , where T is tautology, = ~ p ∧ T ∨ p ∧ ~ q = ~ p ∨ p ∧ ~ q = ~ p ∨ p ∧ ~ p ∨ ~ q = T ∧ ~ p ∨ ~ q = ~ p ∨ ~ q

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