WAEC 2024 · Paper 1 · Q16

Consider the following statements:
$m$ : Edna is respectful
$n$ : Edna is brilliant.
If $m \Rightarrow n$ , which of the following is valid?

Worked solution (try it first)

The implication $m$
$\Rightarrow n$ is equivalent to its contrapositive: swap the parts and negate both.
So $\sim n$
$\Rightarrow \sim m$ is valid, option C.