Mathematical Conundrums

Barry R. Clarke has published over 1, 500 puzzles in The Daily Telegraph and has contributed enigmas to New Scientist, The Sunday Times, Reader's Digest, The Sunday Telegraph, and Prospect magazine. His book Challenging Logic Puzzles Mensa has sold over 100, 000 copies. As well as a PhD in Shakespeare Studies, Barry has a Master's degree in quantum mechanics. He is now working on a revised theory of the hydrogen atom. Other skills include mathematics tutor, film-maker, comedy-sketch writer, cartoonist, computer programmer, and blues guitarist! For more information please visit http://barryispuzzled. com