No there 10 athletes did not win any medals in the 7 sports they competed in.
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Kazakhstan competed at the 2012 Summer Olympics in London, United Kingdom by sending a team of 115 athletes to compete in 20 sports. They won 13 medals including 7 Gold Medals
soccer
Swimming Sailing Cycling Athletics Canoeing Rowing Diving Triathlon Water Polo Field Hockey Basketball
Japan with 293 athletes was represented in all sports except basketball and handball at the Games. The team won 7 gold medals and 38 medals in total
For the first Modern Olympic Games in 1896, Greece won the most medals with 46 and the United States won the most gold medals with 11. Other countries that won medals at the first Modern Olympics were Germany, France, Great Britain, Hungary, Austria, Australia, Denmark, and Switzerland.
204 countries in 302 events from 26 sports and 39 disciplines with over 10,0000 athletes winning 962 Medals including 302 Gold Medals 304 Silver Medals and 356 Bronze Medals
There are 26 sports with 39 disciplines or categories and 302 events. There are hundreds or even thousands of games, matches or competitions leading up to the 962 total medals awarded for these 302 medals events
They have 50 athletes in 4 sports and won 12 medals 4 Gold 4 Silver and 4 Bronze
There are 98 events for which medals will be awarded.
shooting