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 (1)/(5) . Find the probability that out of 5 students. at most three are swimmers.

What is the probability of having 53 Sundays in a leap year?

In a family of 3 children, find the probability of having at least one day.

(i) Find the probability that a student obtained less than 20% in the mathematics test. (ii) Find the probability that a student obtained marks 60 or above.

In an entrance test that is graded of the basis of two examination, 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 atleast one of them is 0.95. What is the probability of passing both?

Of the students in a college, it is known that 60% reside in hostel and 40% are day scholars (not residing in hostel) . Previous years results report that 30% of all students who reside in hostel attain A grade and 20% of day scholrs attain A grade in their annual examination . At the end of the year, one student is chosen at random from the college and he has an A grade, what is the probability that the student is a hostler ?

If 2/11 is the probability of an event 'A'.What is the probability of the event 'not A'?

The probability that a student will pass the final examinatin in both English and Hindi is 0.5 and the probability of passing neither is 0.1. If the probability of passing the English examination is 0.75. What is the probability of passing the Hindi examination?

If (2)/(11) is the probability of an event.What is the probability the event 'not A '

In answering a question on a multiple choice test a student either knows the answer or guesses. Let 3/4 be the probability that he knows the answer and 1/4 be the probability that he guesses. Assuming that a student who guesses the answer will be correct with probability 1/4. What is the probability that a student knows the answer given that he answered it correctly.