If the probability of A to fall in an examination is `1/5` and that of B is `3/(10)dot` then, the probability that either A or B fails is a. 1/2 b. 11/2 c. 19/50 d. none of these

If the probability of A to fall in an examination is (1)/(5) and that of B is (3)/(10) .then,the probability that either A or B fails is a.1/2 b.11/2 c.19/50 d.none of these

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 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 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 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 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 probabilities for A to fail in anexamination is 0.2 and that for B is 0.3, then the probability that either A or B fails is