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The half-life of a radioactive sample is...

The half-life of a radioactive sample is 6.93 days. After how many days will only `1/20` of the sample be left over? [Take `log_(e)(20) = 3.0`]

A

20 days

B

27 days

C

30 days

D

35 days

Text Solution

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The correct Answer is:
C
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