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| Probable Near Pandigital Poser (Posted on 2010-01-31) |
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Determine the probability that a 15-digit base ten positive integer with no leading zero contains each of the digits from 0 to 9 at least once, but at most twice.
As a bonus, determine the probability that a 15-digit base ten positive integer having no zero digit contains each of the digits from 1 to 9 at least once, but at most twice.
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Submitted by K Sengupta
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Rating: 5.0000 (1 votes)
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Solution:
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The required probability is 321810489/31250000000.
For the bonus question, the required probability is 784784000/94143178827.
For an explanation, refer to the solution submiited by Charlie in this location.
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Subject |
Author |
Date |
 | solution | Charlie | 2010-01-31 14:09:57 |
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