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| Oddly even numbers (Posted on 2017-10-01) |
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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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Submitted by Math Man
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