Volume 18 Issue 1 (Year 1990)

• The Icosahedron (Michael Atiyah)
• Uncertainty and sequential choice (John A Bather)
• Introduction to robust statistics (Xuming He)
• An investigation into the mathematical theory behind check-digits for the purpose of error-detection (Ng Weng Leng)
• Problems and solutions
• Annual report 1989
• Announcement

Volume 18 Issue 2 (Year 1990)

• An overview of classical integration theory (Ma Zheng Min, Lee Peng Yee)
• A geometrical figure associated with the cycle of sixty years (John Rigby)
• Theoretical computers and diophantine equations (Alvin Chan, KJ Mourad)
• Problems and Solutions
• Interschool mathematical competition 1990 – problems & solutions
• The 31st International Mathematical Olympiad (YK Leong)
• Index to Volume 18