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| Getting The Minimum With SOD (Posted on 2008-12-02) |
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Determine the minimum value of a positive decimal integer m such that:
SOD(m) = 100, and: SOD(2m) = 110
where, SOD(x) denotes the sum of the digits of x.
Note: Try to derive a non computer-assisted method, although computer program/spreadsheet solutions are welcome.
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Submitted by K Sengupta
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Rating: 4.5000 (2 votes)
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Solution:
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(Hide)
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The required minimum value of m is 2,449,999,999,999.
For an explanation, refer to the solution submitted by Brian Smith in this location.
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Subject |
Author |
Date |
 | Solution | Dej Mar | 2008-12-02 21:22:04 |
| Solution | Brian Smith | 2008-12-02 15:31:43 |
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