The percentage of quantity of a radioactive material that remains after 5 half-lives will be .

If a radioactive material remains 25% after 16 days, then its half life will be

If a radioactive material remains 25% after 16 days, then its half life will be

After an interval of one day , 1//16th initial amount of a radioactive material remains in a sample. Then, its half-life is .

After an interval of one day , 1//16th initial amount of a radioactive material remains in a sample. Then, its half-life is .

The percentage of radioactive substance left after 5 half lives is

What fraction of a radioactive sample decay after three half lives?