Counting the number of zeros
37873
Number of zero digits in factorials
49899
Determine the number of real roots
26569
Counting binary operations on a set with $n$ elements
72223
Last non Zero digit of a Factorial
72872
Number of zeroes of solution to $y''(x)+e^{x^2}y(x)=0$ in $[0,3π]$
42706
How many $N$ digits binary numbers can be formed where $0$ is not repeated
116509
How can I count the number of elements of a given value in a matrix?
152485
Reliably determine the number of elements in an array
124090
zero matrix to the power of 0
12620
A method to count occurrences in a list
40566
Counting surjective functions
42795
Number of bit strings with 3 consecutive zeros or 4 consecutive 1s
101824
Proving zeros inside a disk using Maximum Principle?
44818
Show a leading zero if a number is less than 10
106380
What is $n!$ when $n=0$?
1050
Counting inversions in an array
37958
Derive a formula to find the number of trailing zeroes in $n!$