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Start Chapter QuizProbability Mind Map
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Probability of an event
highProbability of an event is a number that shows how likely that event is to happen.
First write the sample space or total number of outcomes, then count only the favourable ones.
Probability as favourable over total outcomes
highFor equally likely outcomes, probability of an event equals favourable outcomes divided by total outcomes.
Write the event first, then count only matching outcomes before dividing by the total.
Checking validity of a probability value
mediumA probability value is valid only if it lies between 0 and 1, including both ends.
After solving, quickly test your answer: is it between 0 and 1? If not, recheck the counting.
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