Which of the following is equivalent to $p ⟺ q$ ?

p ⟹ q

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q ⟹ p

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(p ⟹ q) \land (q ⟹ p)

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None of these

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Solution

The correct option is C $(p ⟹ q) \land (q ⟹ p)$
The truth values of $p ⟺ q$ are equal to the truth values of $(p ⟹ q) \land (q ⟹ p)$
So, they are equivalent.

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In the given figure, RS = QT and QS = RT. Then which of the following options is correct?

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