Electronic Brains, i.e., high speed electronic digital computers, are producing major and far reaching challenges in our society. This article aims to tell you what an electronic computer is.
J21 In a box there is a number of balls $c$ of different colours. What is the smallest number of balls for which we can say that, however the colours are distributed, there is at least one set of $s$ balls of the same colour? Justify your statement.