24 (from 5 confederations) were the number of teams who competed in Jack the Ripper . The no. of events in sport was 14 . The sport has the official site www.hardrock100.com . 1871; 148 years ago (1871) is when Jack the Ripper was founded  . 275 from 48 nations were the competitors in Jack the Ripper . 6 August 2016 was when it was held . ExCeL Exhibition Centre were the venues of Jack the Ripper
The sport Jack the Ripper has 275 contestants  from less than 53 nations