Exam phodne ki Probability Theory

Basic questions and theorems (addition,multiplication) || Conditional probability theory

Probability that Priyanka will pass an exam is 'k', she appeared in 5 exams and if probability that she will pass is exactly 4 out of 5 then find the value of 'k'

For a student to qualify,he must pass at least two out of three exams.The probability that he will pass the 1 st exam is p.If he fails in one of the exams,then the probability of his passing in the next exam,is p/2otherwise it remains the same.Find the probability that he will qualify.

Two students Anil and Ashima appeared in an examination. The probability that Anil will qualify the examination is 0.05 and that Ashima will qualify the examination is 0.10. The probability that both will qualify the examination is 0.02. find the probability that: i. Both Anil an Ashima will not qualify the exam ii. At least one of them will not quality the exam iii. Only one of them will qualify the exam.

Probability that A will pass the exam is (1)/(4) , B will pass the exam is (2)/(5) and C will pass the exam is (2)/(3) . The probability that exactly one of them will pass th exam is

The probability that a student passes at least in one of the three examinations A,B,C is 0.75, the probability that he passes in atleast two of the exams is 0.5 and the proabability he passes exactly two of the exams is 0.4 . If alpha,beta, gamma , are respectively the probabilities of the student passing in A,B,C then.

What is the probability of getting 101 marks out of 100 marks in maths exams ?

What is the probability of getting 101 marks out of 100 marks in monthly exams?

The probability of passing in an exam for Ramesh, Jay, Sunil are (3)/(7),0.78 and 66%. Who has least probability of passing ?

There are 50 questions in an exam.A strudent's probability that he is unable to correctly answer less than 2 questions