A radioactive isotope having a half life of 3 days was received after 12 days. It was found that there were 3 gm of the isotope in the container. The initial weight of the isotope when packed was

Options :
  1. 12 gm
  2. 32 gm
  3. 40 gm
  4. 48 gm
Answer and Explanation :-

Answer: Option 4

Explanation:

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