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# Probability Calculations

Probability denotes possibility. To be able to find the probability of a single event to occur, we need to know the total number of possible outcomes first.

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How do you calculate probability?

How to calculate probability: divide the number of events by the number of possible outcomes. This will give us the probability of a single event occurring.

How do you calculate probability using Venn diagrams?

How to calculate probability using Venn diagrams: List and group all possible events using set notation. After the listing is done, we use algebra or simple calculations to find the ratios or probabilities.

What is the formula of probability?

Probability = Number of favourable outcomes/ Total number of outcomes

How do you find the probability of two events?

How to find the probability of two events: just multiply the probability of the first event by the second. For example, if the probability of event A is 2/9 and the probability of event B is 3/9 then the probability of both events happening at the same time is (2/9)*(3/9) = 6/81 = 2/27.

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