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There are 30 pens in a box. Nine are yellow, 4 are black and 7 are green. What's the probability that a pen which is taken from the box without looking will be green? |
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Answer» There are 30 pens in a box. Nine are yellow, 4 are black and 7 are green. What's the probability that a pen which is taken from the box without looking will be green? |
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