allery50 ଜଣ ଛାତ୍ରଛାତ୍ରୀ ଥିବା ଏକ ଶ୍ରେଣୀରେ, 30 ଜଣ କ୍ରିକେଟ୍ ଏବଂ 25 ଜଣ ଫୁଟବଲ୍ ଖେଳନ୍ତି। 10 ଜଣ ଉଭୟ ଖେଳନ୍ତି। କେତେ ଜଣ କୌଣସିଟି ମଧ୍ୟ ଖେଳନ୍ତି ନାହିଁ?
A5
B15
C20
D10
Answer & Solution
Correct answer: A. 5
ଅତି କମରେ ଗୋଟିଏ ଖେଳନ୍ତି (union) = 30 + 25 - 10 = 45. କୌଣସିଟି ଖେଳନ୍ତି ନାହିଁ = 50 - 45 = 5.
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