A bag contains 10 marbles. Four of them are red, three blue, two white and one yellow. A marble is drawn at random. What is the
probability it is not blue?
2 answers:
Probability =
(number of different successful results) / (number of all possible results) .
Number of marbles that are not blue = 7
Number of marbles in the bag = 10
Probability that one marble drawn at random is not blue = 7/10 = 70% .
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