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Introduction to the probability of an eventA bag with 12 marbles has 5 blue marbles, 3 red marbles, and 4 yellowmarbles. A marble is chosen from the bag at random. What is theprobability that it is blue or red?Write your answer as a fraction in simple form



Answer :

12 marbles in total

- 5 blue

- 3 red

- 4 yellow

probability that it is blue or red: P(blue) + P(red)

[tex]\begin{gathered} \frac{5+3}{12} \\ =\frac{8}{12} \\ =\frac{2}{3} \end{gathered}[/tex]

2/3 = 66.67%

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