Exactly what year did "Serbia" get their third medal? They got 2 in 2016, 1 for mens and women each. Other than that, they have not won any other medal as Serbia.
The only listings in wikipedia for Serbia BB in the Olympics is Bronze for 2016 Women, Silver for 2016 Men. It does list the following but they competed as Yugoslavia and they are already on the list and they should not be counted among their Olympic hauls.
Gold for 1980, Silver for 1968,1976, 1988 and 1996, and Bronze for 1984
"Soviet Union" is probably worth a 13th medal - in 1992 the "Unified Team" (all of the just-dissolved Soviet Union, minus Georgia) won the women's gold.
I don't know the quizmasters rules, but I always separate the Unified Team from the Soviet Union because it was less than the Soviet Union (just the republics minus Georgia, Estonia, Latvia, and Lithuania), and more than just Russia.
Yugoslavia actually has 8, Biggie Smalls is correct, but those are only the men's medals for Yugoslavia. The women won bronze in 1980 and 1988. Serbia does only have two.
on a recent QM quiz, the united team is counted along with the Soviet Union. I think I would group them together, as well. The medals don't belong to any one country... the athletes had been training together because they used to be Soviets... I think it makes the most sense to award them posthumously to the USSR.
Gold for 1980, Silver for 1968,1976, 1988 and 1996, and Bronze for 1984
Yugoslavia actually has 8, Biggie Smalls is correct, but those are only the men's medals for Yugoslavia. The women won bronze in 1980 and 1988. Serbia does only have two.