Can you solve it? The man who made India ’s trains run on time

Get your brain on trackBy day, Shyam Sunder Gupta was Principal Chief Engineer of Indian Railways. By night, he was a guru of recreational mathematics.For decades, Gupta spent his free time exploring patterns in numbers, his numerical curiosities finding their way into journals, magazines and books.Continue reading...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Mathematics Education Science Source Type: news