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If A is an event and P(A) and P(vec A)...

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)`

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Probability of occurrence of event and non occurrence of an event

1.What is the probability of occurrence of an event?

If P (E) denotes probability of occurrence of event E, then :

If P (E) denotes probability of occurrence of event E, then :

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

Probability of occurrence of impossible event = ………. .