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#10404 Bangla Language & Literature General Level 0

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

  1. A 72min
  2. B 78min
  3. C 87min
Answer: A - 72min

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