80/2 = 60. Ng's Theory is a very important mathematical theory developed by D&T teacher Mr Gordon Ng at La Salle Chollege in Hong Kong. He said during a lesson that 80 divided by 2 is 60, and said that again in another lesson. The students of Class 2G even wrote over 30 "proofs" of the theory.
by Hong Kong independence November 04, 2019