AP Police Constable Prelims 22 Jan 2023 Paper

Every student of an educational institution speaks either Telugu or Hindi or English. If 50 students can speak both Telugu and English, 35 both Telugu and Hindi, 25 both English and Hindi, 5 can speak all the 3 languages, 15 can speak only Telugu, 25 can speak only Hindi and 10 can speak only English, then the total number of students of that institution is