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12.5% of a radioactive sample are left. How many half-lives have passed?​

12.5% of a radioactive sample are left. How many half-lives have passed?​
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12.5% of a radioactive sample are left. How many half-lives have passed?​

asked
User Wavemaster
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1 Answer

1 vote

Answer:

3 half lives have passed.

Step-by-step explanation:

answered
User Kiran Thapa
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