Copyright 2012 RJE-productions http://www.puzzlesite.nl/index_us.html en The Ultimate Puzzle Site: our exciting new puzzles! puzzle@dse.nl http://www.puzzlesite.nl/index_us.html http://puzzle.dse.nl/images/puzzle2.gif 48 48 The Ultimate Puzzle Site - our exciting new puzzles! Mon, 06 Feb 2012 08:00:00 +0100 http://puzzle.dse.nl/math/index_us.html#fintthefault Below we prove that 2=1: Suppose that x = y. Then holds: 2x - x = 2y - y This we can rewrite to: 2x ... Mon, 06 Feb 2012 08:00:00 +0100 Mathematical Problems http://puzzle.dse.nl/logical/index_us.html#family_fuss At a family party, a grandfather, a grandmother, two fathers, two mothers, four children, three gran... Mon, 06 Feb 2012 08:00:00 +0100 Logical Puzzles http://puzzle.dse.nl/teasers/index_us.html#eureka There is a story that Archimedes, the Greek mathematician, was asked to find out if the new golden c... Mon, 06 Feb 2012 08:00:00 +0100 Brain-Teasers http://puzzle.dse.nl/teasers/index_us.html#table_for_two You are sitting with one opponent at an empty, round table. Taking turns, you should place one euro ... Mon, 06 Feb 2012 08:00:00 +0100 Brain-Teasers http://puzzle.dse.nl/teasers/index_us.html#know_or_not Two whole numbers, m and n, have been chosen. Both are unequal to 1 and the sum of them is less than... Mon, 06 Feb 2012 08:00:00 +0100 Brain-Teasers