WAEC - Mathematics (2022 - No. 15)
Consider the statements:
p: Stephen is intelligent
q: Stephen is good at Mathematics
If p⇒q, which of the following is a valid conclusion?
If Stephen is good at Mathematics, then he is intelligent
If Stephen is not good at Mathematics, then he is not intelligent
If Stephen is not intelligent, then he is not good at Mathematics
If Stephen is not good at Mathematics, then he is intelligent
Vysvětlení
If p implies (→) q
then not (~) q → not (~) p
Option B