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Oddly even numbers (Posted on 2017-10-01) Difficulty: 3 of 5
Let an oddly even number be an even number that contains its greatest odd factor. For example, 1792=2^8*7 is an oddly even number because the greatest odd factor of 1792 is 7, which is in 1792. X and Y are both oddly even numbers. When you remove the first digit of X, you get Y. What are X and Y?

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  Subject Author Date
Solutioncomputer solutionCharlie2017-10-01 15:48:18
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