NECO 2022 · Paper 1 · Q30

Let $p$ : I pass mathematics, $q$ : I pass physics.

Conclusion: I pass mathematics if and only if I pass physics. Translate the conclusion into symbol.

Worked solution (try it first)

"If and only if" is the biconditional, written $\Leftrightarrow$ .
Both parts are stated positively, so the conclusion is $p \Leftrightarrow q$ , option C.