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2 năm trước
mọi người giúp mình nhé : Trung bình cộng của hai số là 27, số bé là 19 thì số lớn là: A. 54 B. 35 C. 46 D. 23 Câu 3: 1m2 + 18cm2 = … cm2: A. 118 B. 1018 C. 10018 D. 100018 aai làm nhanh mình cho 5* thank you
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