Solutions for problems found at Project Euler.
Developed with python 2.7.
https://projecteuler.net/archives

https://projecteuler.net/problem=506
unit test: TestClockSequence.py
$ python ./clock_sequence_506.py

https://projecteuler.net/problem=96
references: http://www.math.cornell.edu/~mec/Summer2009/meerkamp/Site/Introduction.html
unit test: TestSudoku.py
input file: p096_sudoku.txt
$ python ./sudoku_96.py

https://projecteuler.net/problem=2
references:
http://eulersolutions.fr.yuku.com/topic/358/problem-506#.VdoocrcVfsY
https://github.com/Meng-Gen/ProjectEuler/blob/master/506.py
https://projecteuler.net/thread=506
https://www.khanacademy.org/computing/computer-science/cryptography/modarithmetic/a/modular-inverses
unit test: TestEvenFibonacci.py
$ python ./even_fibonacci_2.py