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A photography student took portrait photos of people from his hometown. He wants to develop 8 of the photos, 3 of which were photos of

A photography student took portrait photos of people from his hometown. He wants to develop 8 of the photos, 3 of which were photos of teenagers. If he randomly chooses to develop 4 of the photos in black and white in a specific order, what is the probability that just the first 2 of the chosen photos are of teenagers

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