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Question

14 min শেষে তেজস্ক্রিয় Polonium এর 1/16 অংশ অবশিষ্ট থাকে। মৌলটির অর্ধায়ু কত?

\frac{7}{8} m i n

\frac{8}{7} m i n

\frac{7}{2} m i n

\frac{14}{3} m i n

ANSWER : 3

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