All six members of the Vietnamese delegation won prizes, including one gold medal, at an international mathematics contest for high school students, ranking ninth out of 100 participating countries and territories.
Other prizes Vietnam claimed at the 53rd International Mathematics Olympiad, held in Argentina on July 4-16, were four silver medals and one bronze medal, according to a report on VnExpress Monday.
Tran Van Kien, deputy chief of the education ministry's Center for Educational Testing and Quality Assurance, was quoted as saying that compared to last year, this year's achievement was "worth cheering."
At the contest held last year in Amsterdam, the Netherlands, Vietnam ranked 31st with six bronzes, the lowest ranking since the country first attended the annual event in 1974, Kien said.
According to VnExpress, this year 548 contestants attended this year's contest, which began in Romania in 1959.
At the International Biology Olympiad organized in Singapore from July 7-16, four Vietnamese contestants won one silver medal and three bronzes.
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