SOLUTION: Why are probabilities between 0 and 1?

Question 1207456: Why are probabilities between 0 and 1?
Found 2 solutions by ikleyn, math_tutor2020:
Answer by ikleyn(52797) (Show Source): You can put this solution on YOUR website!
.

By the definition.

Answer by math_tutor2020(3817) (Show Source): You can put this solution on YOUR website!

0 = 0% represents "this event will never happen"
1 = 100% means "there's full guarantee this event will happen"

A probability p is some value on the interval
In words: p is between 0 and 1 including both endpoints.

Example: p = 0.20 = 20% chance it will rain tomorrow

Negative probability values do not make sense.
Also, the probability cannot exceed 1 since "absolute certainty" status is the highest we can go.

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