
The Sixth U.S.A. Mathematical Olympiad took place on 3 May 1977. The preliminary examination, the Annual High School Mathematics Examination, was taken on 8 March by approximately 341 000 students. Those who scored 105 or better out of the maximum possible score of 150 were invited to participate in the Olympiad. There were 111 of these. Because four of the acceptances were not complete, 107 students finally took the Olympiad.
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