A group of 30 men participate in a sruvey on language skills. The number of men whoe know both English and Hindi was equal to the number of men who know neither of these language . The number of men who know English is 4 more than those who know Hindi. How many know Hindi?

in a group of 50 people, 35 speak Hindi, 25 speak both English and Hindi, and all the people speak at least one of two language. The number of people speak English is

In a state with a population of 75 x 10^6, 45% of them know Hindi, 22% know English, 18% know Sanskrit, 12% know. Hindi and English, 8% know English and Sanskrit, 10% know Hindi and Sanskrit and 5% known all the three languages What is the number of people who do not know any of the above three languages? What is the number of people who know only Hindi . What is the number of people who know only Sanskrit? What is the number of people who know only English? What is the number of people who know only one language? What is the number of people who know only two languages?

In a flight 55 people speak Hindi, 20 speak English and 15 speak both English and Hindi. The number of people who speak at least one of the two languages is

In a flight 55 people speak Hindi, 20 speak English and 15 speak both English and Hindi. The number of people who speak at least one of the two languages is

In a group of 50 people,35 speak Hindi,25 speak both English and Hindi and all the people speak at least one of the two languages.How many people speak only English and not Hindi? How many people speak English?

In a group of 50 people, 35 speak Hindi, 25 speak both English and Hindi and all the people speak at least one of the two languages. How many people speak only English and not Hindi? How many people speak English?

In a group of 50 people, 35 speak Hindi, 25 speak both English and Hindi and all the people speak at least one of the two languages. How many people speak only English and not Hindi? How many people speak English?。