Among the given statements below,which one is a tautology?

  • A
    $\sim p \vee (\sim p \vee \sim q)$
  • B
    $\sim q \wedge (\sim p \vee \sim q)$
  • C
    $(\sim p \vee \sim q) \wedge (p \vee \sim q)$
  • D
    $(\sim p \vee \sim q) \vee (p \vee \sim q)$

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Similar Questions

Which of the following statements is a contradiction?

Among the two statements:
$(S1): (p \Rightarrow q) \wedge (q \wedge (\sim q))$ is a contradiction and
$(S2): (p \wedge q) \vee ((\sim p) \wedge q) \vee (p \wedge (\sim q)) \vee ((\sim p) \wedge (\sim q))$ is a tautology.

The statement $A$ $\rightarrow (B$ $\rightarrow A)$ is equivalent to

Consider the following statements:
$(A)$ If $4+3=8$,then $5+3=9$
$(B)$ If $6+4=10$,then the moon is flat
$(C)$ If both $(A)$ and $(B)$ are true,then $5+6=17$
Which of the following statements is correct?

Write the negation of the following statement and check whether the resulting statement is true:
There does not exist a quadrilateral which has all its sides equal.

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