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1. যদি সেট A ={5, 15, 20, 30} এবং B= {3, 5, 15, 18, 20} হয় তবে নিচের কোনটি A n B নির্দেশ করবে?

  • A. {3, 18, 30}
  • B. {3, 18, 30}
  • C. {3, 18, 30}
  • D. {3, 18, 30}

Answer: Option C

Explanation:

A∩B={5,15,20,30}∩{3,5,15,18,20,}={5,15,20}

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