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Half life for radioactive ""^(14)C is ye...

Half life for radioactive `""^(14)C` is years. In how many years, 200 mg of `""^(14)C` sample will be reduced to 25 mg ?

A

23040 years

B

17280 years

C

115200 years

D

5760 years.

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The correct Answer is:
B
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