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MathNet 2026 — Part 10 Question 191

Math Olympiad Vault · MathNet 2026 — Part 10

Question 191

January 3, 1911 was an odd date as its abbreviated representation, $1 / 3 / 1911$, can be written using only odd digits (note all four digits are written for the year). To the nearest month, how many months will have elapsed between the most recent odd date and the next odd date (today is $3 / 3 / 2001$, an even date).