What is the probability of an event happening?

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Solution

The probability of an event happening is the ratio of the number of favorable outcomes to the event and the total number of outcomes.
$P (E) = \frac{n u m b e r o f f a v o r a b l e o u t c o m e s}{t o t a l n u m b e r o f o u t c o m e s}$ .
The probability of an event happening is more than $0$ but less than or equal to $1$ .

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