In on examination the probability of a student passed in physics is 2/3 , passed in both English,and physics is 14/45, If the probability of passing at least one subject is4/5 , find the probability of passing in English?

The probability that a student passes a physics test is 2/3 and the that he passes both a physics and English test is 14/25 . The that he passes at least one test is 4/5 . What is the probability that he passes the English test.

Find the probability of getting at least one tail in 4 tosses of a coin.

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?

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

The probability that a candidate passes in physics is 70% and that the passes in chemistry is 40% . What is the probability that the candidate passes in any one of the two subjects ?

If the probability of success in a single trials is 0.05, how many Bernoulli trials must be performed in, order that the probability of at least one success is 2/3 or more.

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

In an examination 56% of the candidates failed in English and 48% Failed in Science. If 18% failed in both English and Science ,find the percentage of those wgo passed in both the subjects.

The probability that a contractor will get a plumbing contract is (2)/(3) and the probability that he will not get an electric contract is (5)/(9) ,if the probability getting of at least one contract is (4)/(5) then what is the probability that he will get both the contract?