| First Reactor | Answer | Current Number of Reactors | % Correct |
|---|---|---|---|
| 1954 | Russia | 37 | 100%
|
| 1956 | United Kingdom | 15 | 100%
|
| 1956 | France | 58 | 96%
|
| 1962 | Germany | 7 | 96%
|
| 1957 | United States of America | 99 | 96%
|
| 1971 | Canada | 19 | 91%
|
| 1994 | China | 46 | 91%
|
| 1969 | India | 22 | 91%
|
| 1966 | Japan | 42 | 91%
|
| 1978 | South Korea | 24 | 91%
|
| 1969 | Spain | 7 | 91%
|
| 1964 | Italy | 0 | 89%
|
| 1964 | Sweden | 7 | 89%
|
| 1978 | Ukraine | 15 | 89%
|
| 1962 | Belgium | 8 | 84%
|
| 1985 | Brazil | 2 | 84%
|
| 1972 | Pakistan | 5 | 84%
|
| 1974 | Argentina | 3 | 82%
|
| 2013 | Iran | 1 | 82%
|
| 1990 | Mexico | 2 | 82%
|
| 1969 | Switzerland | 5 | 80%
|
| 1969 | Netherlands | 1 | 78%
|
| 1976 | South Africa | 2 | 78%
|
| 1977 | Finland | 4 | 73%
|
| 1996 | Romania | 2 | 73%
|
| 1985 | Czech Republic | 6 | 71%
|
| 1974 | Bulgaria | 2 | 69%
|
| 1983 | Hungary | 4 | 69%
|
| 1973 | Kazakhstan | 0 | 67%
|
| 1972 | Slovakia | 4 | 64%
|
| 1978 | Taiwan | 6 | 64%
|
| 1985 | Lithuania | 0 | 51%
|
| 1983 | Slovenia | 1 | 42%
|
| 1977 | Armenia | 1 | 22%
|