There are 30 pens in a box.
12 of the pens are black.
7 of the pens are green.
The res...
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Mathematics, 26.11.2021 09:30 mis33
There are 30 pens in a box.
12 of the pens are black.
7 of the pens are green.
The rest of the pens are red.
One of the pens is chosen at random.
Find the probability that the pen is red.
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Answers: 3
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