Counting problem posted by pcddizzle

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pcddizzle
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Evan pulls one marble randomly from a bag containing 6 red marbles, 3 green marbles, and 1 yellow marble.

What is P(red or yellow)
 

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pcddizzle said:
Evan pulls one marble randomly from a bag containing 6 red marbles, 3 green marbles, and 1 yellow marble.

What is P(red or yellow)

What are your thoughts? We don't do your homework/coursework for you here at the PF.