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aev [14]
3 years ago
10

Có 30 đề thi trong đó có 10 đề khó và 20 đề trung bình. tìm xác xuất để

Mathematics
1 answer:
Dimas [21]3 years ago
8 0

Answer:

translate in english i can help

Step-by-step explanation:

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The most important part of this is knowing that whatever we do to one side of the equation, we must also do to the other.

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