Number of possible combinations involving the digits 1-9 (inclusive)
117434
Counting integer partitions of n into exactly k distinct parts size at most M
149961
Two digit numbers
22454
How many combinations can I make?
64592
The last two digits of $9^{9^9}$
41008
how many permutations of {1,2,...,9}
48605
Distinct digits in a combination of 6 digits
125132
How can I (algorithmically) count the number of ways n m-sided dice can add up to a given number?
42706
How many $N$ digits binary numbers can be formed where $0$ is not repeated
107121
Integer solutions to combinations of floating point numbers
60416
Finding a permutation, and number of, from powers of the permutation
6138
Combination of a 4-digit number
74102
How can I get a count of the total number of digits in a number?
119031
How many 6 digit numbers are possible with no digit appearing more than thrice?
121614
Count how many number are there from $1$ to $N$ who have all $10$ digits in it at least once.
90032
Problem on Sum of Digits of a Number
153302
$9$ divides $n-r(n)$ where $r(n)$ is $n$ with its digits reversed
115145
Show that $n-m$ is a multiple of 9 when $n$ and $m$ have same digits