alleryଏକ କଲୋନୀରେ, 70 ଜଣ ହିନ୍ଦୀ କୁହନ୍ତି, 50 ଜଣ ଇଂରାଜୀ କୁହନ୍ତି ଏବଂ 30 ଜଣ ଉଭୟ କୁହନ୍ତି। କେତେ ଜଣ ଏହି ଦୁଇଟି ଭାଷା ମଧ୍ୟରୁ ଅତି କମରେ ଗୋଟିଏ ଭାଷା କୁହନ୍ତି?
A60
B70
C80
D90
Answer & Solution
Correct answer: D. 90
ଅତି କମରେ ଗୋଟିଏ = n(H ∪ E) = 70 + 50 - 30 = 90.
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