mathschallenge.netA website dedicated to the puzzling world of mathematicsArea Of Annulus- June 26, 2008 Problem ID: 342 (26 Jun 2008) Difficulty: 2 starhttp://mathschallenge.net/rss_display.php?titleid=area_of_annulus Multiplicatively Perfect- June 26, 2008 Problem ID: 343 (26 Jun 2008) Difficulty: 3 starhttp://mathschallenge.net/rss_display.php?titleid=multiplicatively_perfect Equable Rectangles- June 18, 2008 Problem ID: 341 (18 Jun 2008) Difficulty: 3 starhttp://mathschallenge.net/rss_display.php?titleid=equable_rectangles Divided Square- June 18, 2008 Problem ID: 340 (18 Jun 2008) Difficulty: 2 starhttp://mathschallenge.net/rss_display.php?titleid=divided_square |