The probability expressed as a percentage of a particular occurrence can never be

Probability of occurrence of an event A +Probability of Non-occurrence of an event A=1.

The probability of an occurrence of event A is .7 and that of the occurrence of event B is .3 and the probability of occurrence of both is .4.

In how many ways can a committee of 4 be selected out of 12 persons so that a particular person may never be taken?

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.

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.

Probability can never be…………

Probability of occurrence of event and non occurrence of an event

1.What is the probability of 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)