It is given that in a group of 3 stundents, 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?

Savita and Hamida are friends. What is the probability that both have : same birthday.

Savita and Hamida are friends. What is the probability that both have : different birthday

The probability that a student entering the university will graduate is 0.4. Find the probability that out of 3 students of the University: none will graduate.

The probability that a student entering the university will graduate is 0.4. Find the probability that out of 3 students of the University: only one will graduate.

In a single throw of 2 dices, determine the probability of not getting the same number on the two dices.

In an entrance test that is graded on the basis oftwo 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 atleast one of them is 0.95. What isthe probability of passing both?

What is the probability of having 53 Thursdays in a non-leap year?

In answering a question in 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 at 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 ?