Probability of occurrence of event and non occurrence of an event

If A is an event and P(A) and P(vec A) denote the probabilities of occurrence and non occurrence respectively of event A, the P(A)+P(vec A)

What is event occurrence of event

The odds in favour of an event are 3 : 4. Find the probability of : (i) Occurrence (ii) Non-occurrence of the event.

The probability of occurrence of two events A and B are 1//4 and 1//2 respectively . The probability of their simultaneous occurrence is 7/50 . Find the probability that either A or B must occur.

The probability of occurrence of two events A and B are 1//4 and 1//2 respectively . The probability of their simultaneous occurrence is 7/50 ., find the probability that neither A nor B occurs .

The probability of an occurrence of event A is 0.7 and that of the occurrence of event B is 0.3 and the probability of occurrence of both is 0.4.

Suppose E and F are two events of a random experiment.If the probability of occurrence of E is (1)/(5) and the probability of occurence of F given E is (1)/(10), then the probability of non- occurrence of at least one of the events E and F is

If 5/14 is the probability of occurrence of an event, find (i) the odds in favour of its occurrence (ii) the odds against its occurrence

If A and B are two independent events,then the probability of occurrence of at least one of A and B is given by 1-P'(A)P'(B)