Out of 200 studenst from a school,135 like kabbaddi and the remaining students do not like the game.If one student is selected at random from all the students,find the probability that the student selected doesn't like kabbaddi.

Out of 200 students from a school. 135 like kabaddi and the remaining students do not like the game. If one student is selected at random from all the students, find the probability that the student selected doesn't like kabaddi.

Out of 80 students in a class , 30 passed in Mathematics, 20 in Electronics and10 in both. If one students is selected at random. The probability that the student has passed in none of the subject is

In four schools B_1, B_2, B_3, B_4 the percentage of girls students is 12, 20, 13, 17 respectively. From a school selected at random, one student is picked up at random and it is found that the student is a girl. The probability that the school selected is B_2 , is

In a class, 60% of the students know lesson I , 40% know lesson II and 20% know lesson I and II. A student is selected at random . The probability that the student does not know lesson I and lesson II is .

Two hundred patients who had either Eye surgery or Throat surgery were asked whether they were satisfied or unsatisfied regagrding the result of their surgery. The following table summarizes their response. If one person from the 200 patients is selected at random, determine the probability: that the person was satisfied given that the person had Throat surgery.

Two hundred patients who had either Eye surgery or Throat surgery were asked whether they were satisfied or unsatisfied regagrding the result of their surgery. The following table summarizes their response. If one person from the 200 patients is selected at random, determine the probability: that the person was unsatisfied given that the person had eye surgery.