11. एउटा समुदायमा गरिएको सर्वेक्षणमा 65% ले लोकगीत मन पराउँछन्; 50% ले आधुनिक गीत मन पराउँछन्; 30% ले दुवै गीत मन पराउँछन्
र 450 जनाले दुवै गीतहरू मन पराएनन् भने
In a survey of a community, it was found that 65% liked folk
songs, 50% liked modern songs, 30% like both songs and 450
didn't like both the songs then,
(i) माथिको तथ्यलाई भेन चित्रमा प्रस्तुत गर्नुहोस् ।
draw a Venn-diagram to illustrate the above information,
(ii) सर्वेक्षणमा सहभागी मानिसहरूको सङ्ख्या पत्ता लगाउनुहोस् ।
find the total number of people participated in the survey.
(iii) लोकगीत मात्र मन पराउने मानिसको सङ्ख्या पत्ता लगाउनुहोस् ।
find the number of people who like folk songs only.
Ans: 3000, 1050
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