ERJ Brainteaser: December
1 Dec 2025
Each month, ERJ sets a weekly brainteaser, with questions of varying degrees of difficulty. Readers supplying the most accurate (and stylish) answers are then considered for the prestigious Brainiac of the Month and now Brainiac of the Year titles.
Question 1: Rubber row
Find the rubber connection in: Egypt, Laos, Austria, Spain, Thailand, Oman, Mexico, Ecuador, Rwanda.
Email your answer: correct replies on Friday.
