allery120 લોકોના સર્વેક્ષણમાં, 70 લોકોને સફરજન ગમતા હતા અને 50 લોકોને કેરી ગમતી હતી; 20 લોકોને બંને ગમતા હતા. ફક્ત સફરજન કેટલા લોકોને ગમતા હતા?
A50
B60
C30
D40
Answer & Solution
Correct answer: A. 50
ફક્ત સફરજન = 70 - 20 = 50 લોકો જે સફરજનના વર્તુળમાં છે પરંતુ ઓવરલેપની બહાર છે.
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