In a committee, 50 people speak Hindi, 20 speak English and 10 speak both Hindi and English . How many speak at least one of these 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 class of 50 students 20 take Sanskrit but not Hindi and 37 take Sanskrit. How many students take Hindi but not Sanskrit? (Each student takes either Sanskrit or Hindi).
The report of one survey of 100 students stated that the numbers studying the various languages were : Sanskrit, Hindi and Tamil, 5, Hindi and Sanskrit, 10, Tamil and Sanskrit, 8, Hindi and Tamil, 20, Sanskrit 30, Hindi 23, Tamil 50. The surveyor who prepared the report was fired. Why ?
For an A.P. T_(10) = 1/20 , T_20 = 1/10 . Find sum of first 200 term.
