given a set of numbers n= {1,3,4,5,7}. if event a is the drawing of a number less than 4 and event b is the drawing of an even n
umber, what is the probability that either event a or b will occur?
1 answer:
A OR b means that you add the individual probabilities...
P(<4)=2/5 and P(even)=1/5 so
P(<4 or even)=3/5
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