alleryবিবৃতিসমূহ: (i) সকলো শিক্ষাৰ্থী পৰিশ্ৰমী। (ii) ৰোহণ পৰিশ্ৰমী নহয়। কোনটো উপসংহাৰ বৈধ?
Aৰোহণ এজন শিক্ষাৰ্থী নহয়
Bৰোহণ এলেহুৱা
Cনিৰ্ণয় কৰিব নোৱাৰি
Dৰোহণ এজন শিক্ষাৰ্থী
Answer & Solution
Correct answer: A. ৰোহণ এজন শিক্ষাৰ্থী নহয়
**বিপৰীত সম্বন্ধ (Contrapositive):** যদি সকলো শিক্ষাৰ্থী পৰিশ্ৰমী, তেন্তে পৰিশ্ৰমী নহয় → শিক্ষাৰ্থী নহয়।
ৰোহণ পৰিশ্ৰমী নহয় → ৰোহণ এজন শিক্ষাৰ্থী নহয়।
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