Quotation

Here is one for the math geeks from the film, the problem to qualify for UK's IMO team: "Each integer is coloured either red, yellow or green. Show that there always exist A, B, C, such that A, B, C. A+B, A+C, B+C and A+B+C are all the same colour." Befuddled and confused? Check out the discussion here: http://puzzling.stackexchange.com/questions/22795/the-tough-one-from-a-brilliant-young-mind-2014 Recalled a 2007 book "One to Nine" by Andrew Hodges and its discussion on R, G, B colors (three numbers or A, B, C:) ... introduction to colour three-dimensionality. A colour is coded in HTML by three numbers in the range from 0 to 255, specifying the red, green and blue intensities (roughly as they are perceived by the eye). For instance, black is (0, 0, 0), white is (255, 255, 255), grey is (128, 128, 128), yellow is (255, 255, 0) and Hot Pink is (255, 105, 180). The colour-space is thus a cube. ...