allery70 લોકોના જૂથમાં, 40 ચા પીવે છે, 35 કોફી પીવે છે અને 15 બેમાંથી એક પણ પીતા નથી. બંને પીતા હોય તેવા કેટલા લોકો છે?
A10
B15
C20
D25
Answer & Solution
Correct answer: C. 20
યોગ = 70 - 15 = 55. બંને પીનારા = 40 + 35 - 55 = 20.
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