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Rômulo
a) 1/4 ; 5/9 ; 3/5 ; 2/3 b) 1/4 ; 2/3 ; 3/5 ; 5/9 c) 2/3 ; 1/4 ; 3/5 ; 5/9 d) 5/9 ; 1/4 ; 3/5 ; 2/3 e) 2/3 ; 5/5 ; 1/4 ; 9
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