allery100 લોકોમાંથી, 70 લોકો ચા પીવે છે, 45 લોકો કોફી પીવે છે અને બધા ઓછામાં ઓછું એક પીણું પીવે છે. કેટલા લોકો બંને પીવે છે?
A25
B10
C20
D15
Answer & Solution
Correct answer: D. 15
બંને = 70 + 45 - 100 = 15, કારણ કે દરેક વ્યક્તિ 100 ના સંયોગમાં સામેલ છે.
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