1575ForestryMedium
Keeping the frequency of nuclear tests, it is estimated that on an average the five nuclear powers conducted nuclear tests at the rate of:
AOne test every 11th day
BOne test every 20th day
COne test every 9th day
DOne test every 13th day
Correct answer
C. One test every 9th day
Explanation
The correct answer is One test every 9th day.