allery50 ଜଣ ଥିବା ଏକ ଶ୍ରେଣୀରେ, 30 ଜଣ ଗଣିତ, 25 ଜଣ ବିଜ୍ଞାନ ଏବଂ 15 ଜଣ ଉଭୟ ପଢ଼ନ୍ତି। କେତେ ଜଣ କୌଣସିଟି ମଧ୍ୟ ପଢ଼ନ୍ତି ନାହିଁ?
A5
B12
C10
D8
Answer & Solution
Correct answer: C. 10
Union = 30 + 25 - 15 = 40 ଜଣ ଛାତ୍ରଛାତ୍ରୀ, ତେଣୁ 50 - 40 = 10 ଜଣ କୌଣସିଟି ମଧ୍ୟ ପଢ଼ନ୍ତି ନାହିଁ।
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