Skip to content / Đến nội dung
ThichHocToan.com

MathNet 2004 — Part 02 Question 106

Math Olympiad Vault · MathNet 2004 — Part 02

Question 106

Is there a natural number $n$ for which: if the number $n$ is multiplied by the sum of its digits, the sum of the digits of the resulting product is equal to 3?