The odds against a certain event are 5 to 2 and the odds in favour of another event, independent to the former are 6 to 5. Find the probability that (i) at least one of the events will occur, and (ii) none of the events will occur.
(i) The odds against certain event are 5 to 2
odds in favour of another event are 6 to5
Find the probability that (i) at least one of the events will occur
=1–P(none of the events will occur)
(ii) none of the events will occur.
P(none of the events will occur)
19