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Ifp : 'If a man is rich, then he is happ...

Ifp : 'If a man is rich, then he is happy',q: 'If a man is not rich, then he is not happy', r :'If a man is unhappy, then he is nor rich' and s: 'If a man is happy, then he is rich', then pairs of statements having the same meaning (equivalent) are :

A

p,q and r,s

B

p,s and q,r

C

p,r and q,s

D

`~p,s and~q,r`

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The correct Answer is:
C
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MARVEL PUBLICATION-MATHEMATICAL LOGIC-MULTIPLE CHOICE QUESTION
  1. If p is any statement, then (p^^~) is a

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  2. If p is any statement, then (^^~p) is a

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  3. Ifp : 'If a man is rich, then he is happy',q: 'If a man is not rich, t...

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  4. The negation of the statement(~pvv~q) is

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  5. The negation of the statement (~pvv~q)vv(p^^~q) is

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  6. The dual of the statement (p^^q)vv~q=pvv~q is

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  7. The dual of the statement pvv(qvvr)equiv(pvvq)vvr is

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  8. Negation of the statement "This is false or That is true" is

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  9. Negation of the statement 'This is true and That is false' is

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  10. If statements t and f represent a tautology and a contradiction (falla...

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  11. If statements t and f represent a tautology and a contradiction (falla...

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  12. If statements t and f represent a tautology and a contradiction (falla...

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  13. If statements t and f represent a tautology and a contradiction (falla...

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  14. If statements t and f represent a tautology and a contradiction (falla...

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  15. If statements t and f represent a tautology and a contradiction (falla...

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  16. If p is the sentence 'This statement is false', then

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  17. If p : If the dozen is thirteen, then this sentence will contain thirt...

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  18. Which of the following is the conditional p to q?

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  19. If (p^^~r) to (~p vvq) is false, then truth values of p,q and r are re...

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  20. Current flows through the above circuit when

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