allery70 ଜଣ ଲୋକଙ୍କ ଏକ ଗୋଷ୍ଠୀରେ, 40 ଜଣ ଚା' ପିଅନ୍ତି, 35 ଜଣ କଫି ପିଅନ୍ତି ଏବଂ 15 ଜଣ କୌଣସିଟି ପିଅନ୍ତି ନାହିଁ। କେତେ ଜଣ ଉଭୟ ପିଅନ୍ତି?
A10
B15
C20
D25
Answer & Solution
Correct answer: C. 20
Union = 70 - 15 = 55. ଉଭୟ ପିଅନ୍ତି = 40 + 35 - 55 = 20.
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