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All odd digit (Posted on 2020-10-05) Difficulty: 2 of 5
Find all positive integers n such that the decimal representation of n2 consists of odd digits only.

No Solution Yet Submitted by Danish Ahmed Khan    
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  Subject Author Date
High-quality essay writingBooker2020-10-28 08:31:42
No SubjectBooker2020-10-28 08:31:38
a slightly shorter method.broll2020-10-06 04:57:32
SolutionsolutionCharlie2020-10-05 10:49:40
Solutiona proofLarry2020-10-05 09:58:51
Solution without formal proofLarry2020-10-05 09:05:15
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