SOLUTION: Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1.       Log On


   

Question 199742: Explain in your own words, using the definition of probability why: a) the probability of an event that cannot occur is 0; b) the probability of an event that must occur is 1.
Answer by RAY100(1637) About Me  (Show Source):
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Probability is the ratio of the number going the desired way, to the total possible numbers'
.
something that will not happen has 0 chances / total possible chances., or P=0
.
If something is certain, we know all of the chances will be in numerator / same number = 1
.
And the P = 1,