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A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is ____.

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A radioactive element has a half life of 200 days. The percentage of original activity remaining after 83 days is ____. (Nearest integer) 

(Given : antilog 0.125 = 1.333, antilog 0.693 = 4.93)

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Correct answer is 75%

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