Puzzle for Today

Puzzle No. 216 – Tuesday 1 May

In a given month, the probability of a certain daily paper’s either running a story about inappropriate behaviour at a party conference or running one about somebody’s pet being retrieved from a domestic appliance is exactly half the probability of the same paper’s containing a photo of a Tory MP jogging. The probability of no such photo appearing is the same as that of there being a story about inappropriate behaviour at a party conference. The probability of the paper’s running a story about somebody’s pet being retrieved from a domestic appliance is a quarter that of its containing a photo of a Tory MP jogging. What are the probabilities the paper will (a) run the conference story, (b) run the pet story, (c) contain the jogging photo?

Today’s #PuzzleForToday has been set by Dr Roger Teichmann, Lecturer in Philosophy, St Hilda's College, University of Oxford

(a) 20% (b) 20% (c) 80%.

More fiendish brain-teasers and quizzes on BBC Radio...