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OpenStudy (anonymous):

A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a lavender marble? If a lavender marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a turquoise marble? Give solutions exactly in reduced fraction form, separated by a comma.

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OpenStudy (anonymous):

hello prettynikki. did you try this?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

how many marbles total?

OpenStudy (anonymous):

probability = (favored event)/(sample space)

OpenStudy (anonymous):

11

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OpenStudy (anonymous):

7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles total is \[7+11+5=23\]

OpenStudy (anonymous):

total is 23, number of lavender marbles is7, probability of getting a lavender one if you pick at random is the ratio of lavender to total \[\frac{7}{23}\]

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