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MathNet 2025 — Part 01 (100 complete bilingual questions) Question 91

Math Olympiad Vault · MathNet 2025 — Part 01 (100 complete bilingual questions)

Question 91

How many tuples of positive integers $(a, b, c, d)$ satisfy $abcd = 2025$, such that each of $ab$, $bc$, $cd$, and $da$ is a perfect square?