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Digits

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Croatian Mathematical Olympiad 2012 Problem M-4Croatian Mathematical Olympiad 2012DigitsDivisibilityNT
Croatian Mathematical Olympiad 2016 Problem I-4Croatian Mathematical Olympiad 2016DigitsNTPrimes
Croatian Mathematical Olympiad 2022 Problem 2-2Croatian Mathematical Olympiad 2022ConstructionDigitsNT
International Mathematical Olympiad 1960 Problem 1International Mathematical Olympiad 1960DigitsDivisibilityNT
International Mathematical Olympiad 1962 Problem 1International Mathematical Olympiad 1962DigitsEqNT
International Mathematical Olympiad 1968 Problem 2International Mathematical Olympiad 1968DigitsNTQuadratics
International Mathematical Olympiad 1970 Problem 2International Mathematical Olympiad 1970DigitsInequalitiesNT
International Mathematical Olympiad 1975 Problem 4International Mathematical Olympiad 1975DigitsNTPowers
International Mathematical Olympiad 2004 Problem 6International Mathematical Olympiad 2004DigitsNTParity
Middle European Mathematical Olympiad 2010 Problem T-7Middle European Mathematical Olympiad 2010DigitsNTPowers
Middle European Mathematical Olympiad 2010 Problem T-8Middle European Mathematical Olympiad 2010ConstructionDigitsNT
Middle European Mathematical Olympiad 2016 Problem T-7Middle European Mathematical Olympiad 2016DigitsNTParity
Middle European Mathematical Olympiad 2020 Problem I-2Middle European Mathematical Olympiad 2020ConstructionDigitsNT
Middle European Mathematical Olympiad 2021 Problem T-8Middle European Mathematical Olympiad 2021DigitsNTPowers
Middle European Mathematical Olympiad 2022 Problem T-8Middle European Mathematical Olympiad 2022DigitsNT
Middle European Mathematical Olympiad 2024 Problem T-7Middle European Mathematical Olympiad 2024DigitsDivisibilityNT
Grade 9 1993 Problem 2Grade 9 1993DigitsNTPowers
Grade 9 1995 Problem 4Grade 9 1995DigitsDivisibilityNT
Grade 9 2004 Problem 4Grade 9 2004DigitsRecurrencesSeq
Grade 9 2005 Problem 1Grade 9 2005DigitsDivisibilityNT
Grade 9 2006 Problem 1Grade 9 2006AlgebraDigitsNT
Grade 9 2008 Problem 2Grade 9 2008DigitsDivisibilityNT
Grade 9 2008 Problem 5Grade 9 2008DigitsNT
Grade 9 2009 Problem 1Grade 9 2009DigitsEqNT
Grade 9 2012 Problem 3Grade 9 2012DigitsNT
Grade 9 2017 Problem 1Grade 9 2017AlgebraDigitsEqNT
Grade 9 2024 Problem 2Grade 9 2024DigitsNT
Grade 9 2020 Problem 1Grade 9 2020AlgebraDigitsPowers
Grade 9 2021 Problem 5Grade 9 2021CountingDigitsDivisibilityNT
Grade 9 2024 Problem 4Grade 9 2024DigitsDivisibilityNT
Grade 9 2024 Problem 7Grade 9 2024CombinatoricsCountingDigitsNT
Grade 9 2025 Problem 1Grade 9 2025DigitsNT
Grade 9 2025 Problem 5Grade 9 2025DigitsNTPowersSums
Grade 9 2015 Problem 3Grade 9 2015CountingDigitsModNT
Grade 9 2017 Problem 3Grade 9 2017DigitsModNT
Grade 10 1997 Problem 3Grade 10 1997DigitsNTPowers
Grade 10 2018 Problem 1Grade 10 2018DigitsNT
Grade 10 2020 Problem 7Grade 10 2020CombinatoricsCountingDigitsOptimization
Grade 10 2021 Problem 2Grade 10 2021DigitsDivisibilityNT
Grade 10 2025 Problem 3Grade 10 2025DigitsNT
Grade 10 2022 Problem 5Grade 10 2022DigitsDivisibilityNT
Grade 10 2024 Problem 5Grade 10 2024CombinatoricsCountingDigits
Grade 11 1998 Problem 4Grade 11 1998DigitsDivisibilityNT
Grade 11 2000 Problem 2Grade 11 2000DigitsDivisibilityNT
Grade 11 2018 Problem 5Grade 11 2018CombinatoricsDigitsGamesMod
Grade 11 2020 Problem 2Grade 11 2020CombinatoricsCountingDigits
Grade 11 2021 Problem 5Grade 11 2021CountingDigitsDivisibilityNT
Grade 11 2025 Problem 1Grade 11 2025AlgebraDigitsEq
Grade 11 2018 Problem 3Grade 11 2018DigitsNTPowers
Grade 12 1997 Problem 1Grade 12 1997DigitsModNTPowers