6686 /www/nrich/html/content/id/6686/ 1 2011-06-14T13:13:21 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0"><p>This resource has been moved to <a href="http://nrich.maths.org/6384">http://nrich.maths.org/6384</a></p></mdoxml> 2 3 0 0 0 0 1 What is wrong with these dodgy proofs? Using, Applying and Reasoning about Mathematics Proof by exhaustion Using, Applying and Reasoning about Mathematics Proof by contradiction Using, Applying and Reasoning about Mathematics Disproof by counterexample Using, Applying and Reasoning about Mathematics Converse of theorem and inverse Using, Applying and Reasoning about Mathematics Mathematical reasoning & proof