Let

p : Ramesh listens to music.

p : Ramesh is out of his village.

r : It is Sunday

s : It is Saturday

Then the statement “Ramesh listens to music only if he is in his village and it is Sunday or Saturday” can be expressed as

Option 1 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mrow> <mo>(</mo> <mrow> <mrow> <mo>(</mo> <mrow> <mo>∼</mo> <mi>q</mi> </mrow> <mo>)</mo> </mrow> <mo>∧</mo> <mrow> <mo>(</mo> <mrow> <mi>r</mi> <mo>∨</mo> <mi>s</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mo>)</mo> </mrow> <mo>⇒</mo> <mi>p</mi> </mrow> </math> </span></p>
Option 2 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mrow> <mo>(</mo> <mrow> <mi>q</mi> <mo>∧</mo> <mrow> <mo>(</mo> <mrow> <mi>r</mi> <mo>∨</mo> <mi>s</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mo>)</mo> </mrow> <mo>⇒</mo> <mi>p</mi> </mrow> </math> </span></p>
Option 3 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mi>p</mi> <mo>⇒</mo> <mrow> <mo>(</mo> <mrow> <mi>q</mi> <mo>∧</mo> <mrow> <mo>(</mo> <mrow> <mi>r</mi> <mo>∨</mo> <mi>s</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mo>)</mo> </mrow> </mrow> </math> </span></p>
Option 4 - <p><span class="mathml" contenteditable="false"> <math> <mrow> <mi>p</mi> <mo>⇒</mo> <mrow> <mo>(</mo> <mrow> <mrow> <mo>(</mo> <mrow> <mo>∼</mo> <mi>q</mi> </mrow> <mo>)</mo> </mrow> <mo>∧</mo> <mrow> <mo>(</mo> <mrow> <mi>r</mi> <mo>∨</mo> <mi>s</mi> </mrow> <mo>)</mo> </mrow> </mrow> <mo>)</mo> </mrow> </mrow> </math> </span></p>
2 Views|Posted 6 months ago
Asked by Shiksha User
1 Answer
V
6 months ago
Correct Option - 4
Detailed Solution:

Let

P : Ramesh listens to music

Q : Ramesh is out of his village

R : It is Sunday

S : It is Saturday

Then the statement “Ramesh listens to music only if he is in his village and it is Sunday or Saturday can be expressed as

P Ramesh listens to music

q He is in village.

rs Saturday or Sunday

P ( (q) (rs))

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 option (C) is correct.

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Maths NCERT Exemplar Solutions Class 12th Chapter Four 2025

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