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UGC-NET | UGC NET CS 2015 Jun – II | Question 9
  • Last Updated : 14 May, 2018

Match the following:
9
(A) (1)
(B) (2)
(C) (3)
(D) (4)


Answer: (A)

Explanation:

  • (p → q) ⇔ (¬q → ¬p) is Contrapositive
  • [(p ∧ q) → r] ⇔ [p → (q → r)] is exportation law.
  • (p → q) ⇔ [(p ∧ ¬q) → o] is Reductio ad absurdum
  • (p ↔ q)⇔[(p → q)∧(q → p)] is Equivalence.

So, option (A) is correct.

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