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Probability is the possibility of an event to be occurred or happened.
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Probability is the ratio of the number of favorable events with the total number of events.
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An event which is definitely occurred has probability 1 and an event which definitely not occurred has probability 0.
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The value of probability always lies between 0 and 1.
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Probability is a positive quantity.
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Probability has no unit.
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Probability is the most important concept of Mathematics.
