Disproof by counterexample

Stage 1: Learning

Watch the following video on disproof by counterexample, following the examples carefully with a pen and paper as you go.

Stage 2: Practising

Now that you have watched and understood the video, work through

the following example sheet to drill the techniques required. Full worked

solutions have been provided so remember to check your answers as you go.

proof-disproof-by-counterexample-qs.pdf
proof-disproof-by-counterexample-qs-sol.pdf