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MathNet 2026 — Part 08 Question 57

Math Olympiad Vault · MathNet 2026 — Part 08

Question 57

In January, Petro used to buy from one to three toy cars every day. On February 1, he tried to make a rectangle of all his cars. When he arranged them into rows of 7 cars, one car remained. When he arranged the cars into rows of 10, there were 2 excessive cars. Can Petro arrange them into rows of 4 cars?

**Answer:** yes.