alleryଶ୍ରେଣୀର ମୋଟ ଛାତ୍ରଛାତ୍ରୀ ସଂଖ୍ୟା କେତେ? I: 30% ଝିଅ ଅଟନ୍ତି। II: 21 ଜଣ ପୁଅ ଅଛନ୍ତି।
Aକେବଳ I ପର୍ଯ୍ୟାପ୍ତ ଅଟେ
Bକେବଳ II ପର୍ଯ୍ୟାପ୍ତ ଅଟେ
Cଏକତ୍ର ମଧ୍ୟ କୌଣସିଟି ପର୍ଯ୍ୟାପ୍ତ ନୁହେଁ
Dଉଭୟ ଏକତ୍ର ଆବଶ୍ୟକ
Answer & Solution
Correct answer: D. ଉଭୟ ଏକତ୍ର ଆବଶ୍ୟକ
ପୁଅମାନେ ଶ୍ରେଣୀର 70% ଅଟନ୍ତି, ତେଣୁ 21 କୁ 0.7 ଦ୍ୱାରା ଭାଗ କଲେ 30 ଜଣ ଛାତ୍ରଛାତ୍ରୀ ମିଳନ୍ତି।
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