# Lecture - Introduction to University Mathematics, Lecture 6

> Source: https://ollybritton.com/notes/uni/prelims/mt22/introduction-to-uni-maths/lectures/lecture-6/ · Updated: 2022-10-16 · Tags: uni, lecture

### Flashcards
What’s the contrapositive of $P \implies Q$?::
$$
\lnot Q \implies \lnot P
$$

What’s the converse of $P \implies Q$?::
$$
Q \implies P
$$

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