# Risk

Risk is a measure of the potential expected loss occurring due to natural or human activities. Risk is defined as the expected consequences associated with a given activity. Considering an activity with only one event with probability P that this event occur and with potential consequences C, then the risk R is defined as the product of the probability and the consequences, i.e. R = P x C.

In case of multiple events risk is defined by R=∑(i=1..N)P_{i}C_{i} where N is the number of events and index i indicate event no i.

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Contributor: Sima Rastayesh (ESR11)