In a survey in a ward of a municipality 30% like to listen radio and 90% like to watch T. V. out of total adult people and all
who like to listen radio like to watch T. V. too. If the number of
persons who don't like both of these is 240.
Ans: 1440
(i) उक्त तथ्याङ्कलाई भेनचित्रमा प्रस्तुत गर्नुहोस् ।
Represent the above data in a Venn-diagram.
(ii) टेलिभिजन मात्र हेर्न मन पराउनेको सङ्ख्या पत्ता लगाउनुहोस् ।
Find the number of persons who like only to watch TV.