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MathNet 2014 Question 69

Math Olympiad Vault · MathNet 2014

Question 69

Let $A = 1 \cdot 4 \cdot 7 \cdot \ldots \cdot 2014$ be the product of the numbers less or equal to $2014$ that give remainder $1$ when divided by $3$. Find the last non-zero digit of $A$.