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The contrapositive of statement ~ p Rig...

The contrapositive of statement ` ~ p Rightarrow ( p ^^ ~ q)` is

A

` p Rightarrow ( ~ p vv q)`

B

` p Rightarrow ( p ^^ q)`

C

` p Rightarrow ( ~ p ^^ q)`

D

` ~ p vv q Rightarrow p `

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The correct Answer is:
To find the contrapositive of the statement \( \sim p \Rightarrow (p \land \sim q) \), we will follow these steps: ### Step 1: Identify the original statement The original statement is: \[ \sim p \Rightarrow (p \land \sim q) \] ### Step 2: Write the contrapositive The contrapositive of a statement of the form \( A \Rightarrow B \) is \( \sim B \Rightarrow \sim A \). Here, \( A \) is \( \sim p \) and \( B \) is \( p \land \sim q \). Thus, we need to find: \[ \sim (p \land \sim q) \Rightarrow \sim (\sim p) \] ### Step 3: Simplify \( \sim (p \land \sim q) \) Using De Morgan's laws, we can simplify \( \sim (p \land \sim q) \): \[ \sim (p \land \sim q) = \sim p \lor \sim (\sim q) = \sim p \lor q \] ### Step 4: Simplify \( \sim (\sim p) \) The negation of \( \sim p \) is: \[ \sim (\sim p) = p \] ### Step 5: Combine the results Now we can write the contrapositive: \[ \sim p \lor q \Rightarrow p \] ### Final Result Thus, the contrapositive of the statement \( \sim p \Rightarrow (p \land \sim q) \) is: \[ \sim p \lor q \Rightarrow p \]
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OBJECTIVE RD SHARMA ENGLISH-MATHEMATICAL REASONING -Chapter Test
  1. Which of the following sentences is a statement ?

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  2. The property ~ ( p ^^ q) -= ~ p vv ~ q is called

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  3. When does the inverse of the statement ~ p Rightarrow q results in T...

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  4. which of the following is a contradiction ?

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  5. In which of the following is equivalent cases, p Rightarrow q is fal...

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  6. Which of the following is equivalent to p Rightarrow q ?

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  7. Which of the following pairs are logically equivalent ?

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  8. Which of the following is Contingency?

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  9. The statement p vv q is

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  10. Which of the following is a tautology ?

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  11. The statement p Rightarrow p vv q

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  12. what are the truth values of ( ~ p Rightarrow ~ q) and ~( ~ p Rightar...

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  13. If truth values of p vv q is ture,then truth value of ~ p ^^ q is

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  14. If p and q are two statements, then p vv ~ ( p Rightarrow ~ q) is ...

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  15. The contrapositive of statement ~ p Rightarrow ( p ^^ ~ q) is

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  16. ~ [ ~ p ^^ ( p harr q)] -= is equivalent to

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  17. If a compound statement r is contradiction , then the truth value of ...

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  18. When does the value of the statement (p ^^ r) harr ( r ^^ q) become...

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  19. If p always speaks against q, then p Rightarrow p vv ~ q is

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  20. Which of the following connectives satisfy commutatiive law ?

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