TR-MO-R1 2009 Problem 26
Her için, sayısı, , veya olmak üzere,
eşitliğini sağlayan kaç on sekizlisi vardır?
a) 9 b) 8 c) 7 d) 4 e) 1
Official text Turkish Mathematical Olympiad, first round 2009 official paper, page 8. Quoted with source.
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