If the probability of A failing in an examination is 1/5 and that of B failing the same examination is 3/10, then the probability that either A or B fails is A. 1/2 B. 11/25 C. 19/50 D. None of these

If the probability of A to fail in an examination is 1/5 and that of B is 3/10 , then the probability exactly one of A or B to fail is (i) 11/25 (ii) 19/50 (iii) 1/2 (iv) 3/50

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

If the probability 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

The probability of A to fail in an examination is 1/5 and that of B is 3/10 . If the probability that both of them fails is 3/50 , then the probability that only one of A and B fails, is

Two students Anil and Ashima appeared in an examination. The probability that Anil will qualify the examination is 0.05 and that Ashima will qualify the examination is 0.10. The probability that both will qualify the examination is 0.02. Find the probability that(a) Both Anil and Ashima will not qualify the examination.(b) Atleast one of them will not qualify the examination and(c) Only one of them will qualify the examination.

If three dice are throw simultaneously, then the probability of getting a score of 5 is a. 5/216 b. 1/6 c. 1/36 d. none of these

Two events A and B have probabilities 0.25 and 05, respectively. The probability that both A and B occur simultaneously is 0.14. then the probability that neither A nor B occurs is (A) 0.39 (B) 0.25 (C) 0.11 (D) none of these

The probability student A passing an examination is (3)/(5) , student B passing an examination is (4)/(5) . Find the probability only one of them will pass the examination, assuming the events 'A passses and 'B passes' are independent.

The probability to pass in an examination of mathematics for three students are 1/4,1/5,1/6 . Find the probability that at least two students will pass in this examination.

A father has 3 children with at least one boy. The probability that he has 2 boys and 1 girl is 1//4 b. 1//3 c. 2//3 d. none of these