The probabilities of a student getting first class or second class or third class in an examination are `(2)/(7) , (3)/(5) ,(1)/(10)` respectively . The probability that the students fails is .

The probabilities of a student getting first class or second class or third class in an examination are 2/7, 3/5, 1/10 respecively. The probability that the student fails is

The probabilities of a student getting I, II and III division in an examination are 1/(10),3/5a n d1/4\ respectively. The probability that the student fails in the examination is (197)/(200) b. (27)/(100) c. (83)/(100) d. none of these

The probabilities of a student getting I, II and III division in an examination are 1/(10),3/5a n d1/4\ respectively. The probability that the student fails in the examination is (197)/(200) b. (27)/(100) c. (83)/(100) d. none of these

The probability of an event that student gets I, II and III grade in exam is (1)/(10),(3)/(5) and (1)/(4) respectively. Then ......... is the probability that he fails in exam.

The probability of choosing a boy from a class of 34 students, if there are 13 girls is

Two third of the students of a class are boys and rest are girls . It is known that the probability of a girl getting a first division in Board examination is 0.4 and a boy getting first division is 0.35. Find the probability that a students chosen at random will get first division in Board examination.

Suppose there is a co-education school having 60% boys and 40% girls as students. The girl students have secured first class and second class in equal numbers and all boys secrured first class. A teacher selects a student at random and verifies the result. teacher observes thata student has secured first class in the examination. What is the probability that the student is a girl?

Two thirds of the students in a class are boys and the rest girls.It is known that the probability of a girl getting a first class is 0.25 and that of a boy getting a first class is 0.28 find the probability that a student chosen at random will get first class marks in the subject.

In a class of 10 student, probability of exactly I students passing an examination is directly proportional to i^(2). Then answer the following questions: The probability that exactly 5 students passing an examination is