alleryପ୍ରତିଜ୍ଞା: ହୁଏତ ଟ୍ରେନ୍ A କିମ୍ବା ଟ୍ରେନ୍ B ଠିକ୍ ସମୟରେ ଅଛି। ଟ୍ରେନ୍ A ଠିକ୍ ସମୟରେ ନାହିଁ। କ’ଣ ନିଷ୍କର୍ଷ ବାହାରୁଛି?
Aଉଭୟ ବିଳମ୍ବିତ
Bଟ୍ରେନ୍ B ବିଳମ୍ବିତ
Cକୌଣସିଟି ଚାଲୁନାହିଁ
Dଟ୍ରେନ୍ B ଠିକ୍ ସମୟରେ ଅଛି
Answer & Solution
Correct answer: D. ଟ୍ରେନ୍ B ଠିକ୍ ସମୟରେ ଅଛି
ବିୟୋଜକ ନ୍ୟାୟ (disjunctive syllogism) ଦ୍ୱାରା: A କିମ୍ବା B ସତ୍ୟ ଅଟେ। ~A ସତ୍ୟ, ତେଣୁ B ନିଶ୍ଚିତ ଭାବରେ ସତ୍ୟ ହେବ।
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