TR-MO-R1 2019 Problem 4
İki basamaklı pozitif tam sayılardan oluşan ve herhangi iki elemanının çarpımı 100 ile tam bölünmeyen bir kümenin eleman sayısı en fazla kaç olabilir?
a) 74 b) 76 c) 78 d) 80 e) 82
Official text Turkish Mathematical Olympiad, first round 2019 official paper, page 2. Quoted with source.
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