truongthihuong083 truongthihuong083
  • 24-09-2022
  • Mathematics
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tìm 1 sỗ tự nhiên có 3 chữ số,biết rằng nếu tăng chữ số hàng trăm thêm n đơn vị đồng thời giảm chữ số hàng chục và giảm chữ số hàng đơn vị đi n đơn vị thì được một số có 3 chữ số gấp n lần số có 3 chữ số ban đầu

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