যেভাবে খুশী Pop Quiz

A fossil is found to have 12.5 % of its original radioactive carbon left. If the half-life of carbon is 5600 years, how old is the fossil?
Choose the right answer:
Option A 11200 years
Option B 1000 years
Option C 2800 years
Option D 16800 years
 FuyuumiAmakusa posted বছরখানেক আগে
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