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OpenStudy (anonymous):
Tina has 4 black marbles, 6 red marbles, 3 blue marbles, 7 green marbles, and 5 yellow marbles. She places all of the marbles in a bag and randomly selects one. Find the theoretical probability that Tina will randomly select a yellow marble. Express this in the form of a fraction in the simplest form.
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OpenStudy (kropot72):
\[P(yellow)=\frac{total\ number\ of\ yellow}{total\ number\ of\ all\ colors}\]
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