Mathematical Algorithms

Combinations	Calculates the number of combinations of n items, m times. Source.
Factorial	Algorithm calculating factorials. Source. View Pdf
Fibonacci - Iterative	Fibonacci's suite. Source.
Fibonacci - Recursive	Recursive version of the algorithm. Source.
GCD	Greatest common divisor to two integers.
Median	The median is the most probable value in a list.
Prime Factors	Prime factors of an integer or a list of integers. Source.
Radian	Converts between radians and degrees.