Why we count from 0 to 9?
42529
Why have we chosen our number system to be decimal (base 10)?
87375
Difference between [0-9], [[:digit:]] and \d
55994
Why do statisticians like "$n-1$" instead of "$n$"?
78946
Why does casting out $9$ and $11$ work to compute remainders?
60915
Count number of 1's in binary representation
34784
Is a number meeting these conditions divisible by forty-nine?
64592
The last two digits of $9^{9^9}$
54941
number of trailing zeros
122530
Number of zeros at the end of $k!$
55373
The difference between 0. and 0
136848
Find the number of nonzero elements
80327
Last digits, numbers
37436
In PHP, 0 (int, zero) is equal to "first" or "last" (strings)?
106325
Question about Cardinality
106380
What is $n!$ when $n=0$?
37873
Number of zero digits in factorials
44818
Show a leading zero if a number is less than 10