A student takes examination in four subjects A, B, C, D. His chances of passing in A are `4/5`, in B are `3/4`, in C are `5/6` and in D are `2/3`. To qualify he must pass in A and atleast in two other subjects. What is the probability that he qualifies ?

A college student has to appear for two examinations A and B. The probabilities that the student passes in A and B are 2/3 and 3/4 respectively. If it is known that the student passes at least one among the two examinations, then the probability that the student will pass both the examination is (A) 1/6 (B) 1/2 (C) 1/3 (D) 6/11

The probability that a student passes in Mathematics is and the probability that hepasses in English is (2)/(3) .and the probability that he hepasses in English is (4)/(9). The probability that he passes in any one of the courses is (4)/(5) .The probability that he passes in both is

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.

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.

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.

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 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 will get a pass mark in mathematics is 0.17 and that of getting pass mark in English is 0.25. The probability that he will get pass in both subjects is 0.12.What is the probability that he will get pass mark only one of the two subjects:

A problem in statistics is given to four students A, B, C and D. Their chances of solving it are (1)/(3), (1)/(4), (1)/(5) and (1)/(6) respectively. What is the probability that the problem will be solved?