Math Puzzles - IF, THEN... comes from Viacheslav Komarivskyi. The object is to look at a set of numbers, find the pattern and then prove that you have cracked the code.
There are 30 levels and they get hard pretty quick. I spent way too much time on level 11.
At the moment, I'm somewhere around level 18.

https://itunes.apple.com/us/app/math-puzzles-if-then/id1367115275"mt=8

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