Giải: Giọi số cần tìm là \(\overline{5abc}\)ta có:
\(\overline{abc}\times41=\overline{5abc}\)
\(=>\overline{abc}\times41=5000+\overline{abc}\)
\(=>\overline{abc}\times40=5000\)
\(=>\overline{abc}=5000\div40\)
\(=>\overline{abc}=125\)
Vậy số cần tìm là: 5125
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