It is given that in a group of 3 students, the probability of 2 students not having the same birthday is 0.992. What is the probability that the 2 students have the same birthday?

The probability that a student is not a swimmer is (4)/(5) . The probability that out of 5 students exactly 4 are swimmers is ………..

(i) Find the probability of the students getting more than 40 marks. (2) Find the probability of the students getting less than 30 marks.

Find the probability that a student obtained marks 60 or above.

The probability that a student will pass his examination is 0.73, the probability of the student getting a compartment is 0.13, and the probability that the student will either pass or get compartment is 0.96.

Find the probability that a student obtained less than 20 marks in the mathematics test .

In an competitive open exam all questions are multiple choice (MCQs) and each question has 4 options, in which one options is always true. The probability of an event that student knows the answer of question is 90%. What is the probability of an event that student gives true answer of questions by guessing ?

In an entrance test that is graded on the basis of two examinations, the probability of a randomly chosen student passing the first examination is 0.8 and the probability of passing the second examination is 0.7 . The probability of passing at least one of them is 0.95. What is the probability of passing both ?

Two friends were born in the year 2000. The probability that they have the same birth date is ..........

If the probabilities for A to fail in an examination is 0.2 and that for B is 0.3, then the probability that either A or B fails is