548 học sinh dự kỳ thi toán quốc tế giữa các thành phố của Việt Nam và Nga
(SGGP) - Ngày 11-10, tại Hà Nội đã diễn ra kỳ thi toán quốc tế giữa các thành phố của Việt Nam và Nga. Tại Việt Nam, có 548 học sinh đến từ 24 trường phổ thông tham gia.
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