hindi

In a class, 30% students study English, 15% study Hindi and 10% study both English and Hindi. One student is selected at random. Find the probability that (i) He studies English if it known that he Hindi (ii) He studies Hindi if it is known that he studies English

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 ?

In a certain examination, the candidates can offer papers in English or Hindi or both the subjects. The number of candidates who appeared in the examination is 1000 of whom 650 appeared in English and 200 both in English and Hindi. (i) Hindi , (ii) English only, (iii) Hindi only

An elocution competition was held in Telugu and Hindi. Out of 80 students 45 students took part in Telugu, 35 in Hindi, 15 both in Telugu and Hindi. Then find the number of students (i) who took part in Telugu but not Hindi (ii) who took part in Hindi but not Telugu (iii) who took part in either Telugu or Hindi (iv) who took part in neither