Question 1118939: From the numbers 1 to 50 inclusive, what is the probability of choosing a number which is
a) greater than 20
b) greater than 20 and a multiple of 5
Answer by math_helper(2461)   (Show Source):
You can put this solution on YOUR website! From the numbers 1 to 50 inclusive, what is the probability of choosing a number which is
a) greater than 20
b) greater than 20 and a multiple of 5
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These are counting problems. For each problem, the probability is
(# of outcomes of interest) / (# of possible outcomes)
a) P( an element of {21,22,…,50} is selected) = 30/50 =  or 0.60 or 60%
b) P( an element of {25,30,35,40,45,50} is selected) = 6/50 =  or 0.12 or 12%
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