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In group of seventy people 45 …

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In group of seventy people 45 can speak hindi 33 can speak english and 10 neither speak english nor hindi how many can speak both english and hindi

Posted by Karishan Kumar 6 years ago

CBSE > Class 11 > Mathematics

3 answers

Shivendra Pandey 5 years, 11 months ago

18

Tripti Maurya 6 years ago

Let A be an event of people who speak hindi=45=n(A) B be the event of people who speak english=33=n(B) Now 10 people neither speak english nor hindi n(A intersection B)=10 Find how many people can speak both hindi and english? n(A U B) =? Since n(A U B)= n(A) +n(B)- n(A intersection B) Therefore n(A U B) = 45+33-10 = 78-10 =68 Hence 68 people can speak both hindi and english.

Saket Jaiswal 6 years ago

18

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