1. Tardigrade
  2. Question
  3. Mathematics
  4. We call a number ascending if each digit is greater than the digit that precedes it. For example, 457 is ascending, but 447 is not. Find the number of ascending numbers between 400 and 5000.

Q. We call a number ascending if each digit is greater than the digit that precedes it. For example, 457 is ascending, but 447 is not. Find the number of ascending numbers between 400 and 5000.

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Answer: 141