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Mathematics, 21.07.2019 08:00 miaa1024
Abag is filled with marbles. you take out and mark 80 marbles. then you put the marbles back in the bag and mix the marbles. in a sample of 20 marbles, 4 of the marbles are marked. about how many marbles are in the bag?
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Abag is filled with marbles. you take out and mark 80 marbles. then you put the marbles back in the...
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