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p(Ascending Number) closest to .01 (Posted on 2020-03-16) Difficulty: 2 of 5
An Ascending Number has been defined by the following 2 properties:

- The number has at least 2 digits.

- All digits of the number are in strictly ascending order, in base 10.

For completeness, let's also add: no leading zeros or duplicate digits.

For what value of N is the probability that a randomly chosen N-digit number is also an ascending number closest to .01, i.e. a 1% chance?

For this value of N, what is the exact probability the random number N digits long is ascending?

No Solution Yet Submitted by Larry    
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  Subject Author Date
No SubjectPatricia Brown2020-07-06 22:51:33
Solutionthe full setCharlie2020-03-16 15:08:07
SolutionSolutiontomarken2020-03-16 13:24:04
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