4th question Q4) Probability of trains A, B and C arriving on times is 1/3, 2/5 and 2/3 respectively - Maths - Probability

Question

4th question
Q4) Probability of trains A, B and C arriving on times is 1 / 3 ,
  2 / 5   a n d   2 / 3 respectively What is the
probability that almost one of the trains arrive on time?
(a) 7/15
(b) 22/45
(c) 23/45
(d) None of these

Sanju · Answer

probabaility = 1/3 + 2/5 + 2/3
= [5 + 6 + 10]/15
= 21/15
= 7/5

4th question Q4). Probability of trains A, B and C arriving on times is 1 / 3 , 2 / 5 a n d 2 / 3 respectively. What is the probability that almost one of the trains arrive on time? (a) 7/15 (b) 22/45 (c) 23/45 (d) None of these

4th question
Q4). Probability of trains A, B and C arriving on times is $1 / 3, 2 / 5 a n d 2 / 3$ respectively. What is the probability that almost one of the trains arrive on time?
(a) 7/15
(b) 22/45
(c) 23/45
(d) None of these