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You have a jar containing 10 green marbles, 20 blue marbles, 10 white marbles and 15 red marbles for a combined total of 55 marbles. What is the percentage of the following occurring? Express the occurrence’s probability as a fraction. a)     You want to pick one green marble on the first draw   b)    You wish to pick one blue marble on the first draw.

Respuesta :

Since you may pick any of the marbles with the same probability, the answers will follow the pattern

[tex] P = \dfrac{\text{number of required marbles}}{\text{total number of marbles}} [/tex]

So, the probability of picking a green marble is

[tex] P = \dfrac{10}{55} = \dfrac{2}{11} [/tex]

And a blue marble is

[tex] P = \dfrac{20}{55} = \dfrac{4}{11} [/tex]

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