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numerele 728, 815, 916 impartite la acelasi numar dau resturile 28,15,16 . aflati acel numar

Răspuns :

728-28=700=2²×5²×7
815-15=800=2⁵×5²
916-16=900=2²×3²×5²
cmmdc=2²×5²=100
n>28
n=2×5²=50
n=2²×5²=100