Probability: The Formula to Find Out How Likely Something Is to Happen

The Formula to Find Out How Likely Something Is to Happen

We have discussed a few basic probability formulas for an event here:

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Finding out how likely an event occurs is called the ‘probability’ of that event. So, let us see the formula to find the probability of an event:

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Let A be an event and P(A) represents the probability of an event A. Then we can write:

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For example: Let the sample set be S = numbers on a dice, let us define the event as A = getting a number less than 5 when the dice is rolled.

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The formula to find the probability of not occurring an event is:

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Now let us list all probability formulas of events:

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Bayes Formula and some more formulas are listed below:

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Add all these formulas in your probability revision notes and help your friends too by sharing these.

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