alleryযদি বাতিটি জ্বলে, তবে সুইচটি টেপা রয়েছে। সুইচটি টেপা রয়েছে। সুতরাং বাতিটি জ্বলছে। এটি হলো
Aএকটি যুক্তিযুক্ত অবরোহ
BModus ponens
CModus tollens
Dএকটি আকারগত হেত্বাভাস
Answer & Solution
Correct answer: D. একটি আকারগত হেত্বাভাস
সুইচ টেপা থাকলেই বাতিটি জ্বলবে এমন কোনো নিশ্চয়তা নেই, তাই এটি অনুগ-স্বীকৃতিজনিত ত্রুটি।
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