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Function Function Function Function Foray (Posted on 2015-03-31) Difficulty: 3 of 5
N is a positive integer and F(N) denotes the sum of the base ten digits of N.

Find F(F(F(22016))) and F(F(F(F(22016))))

*** As an extra challenge, solve the puzzle without using a computer program assisted method.

No Solution Yet Submitted by K Sengupta    
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  Subject Author Date
Solutioncomputer solution to both parts; analytic solution for part 2Charlie2015-03-31 14:43:39
SolutionA good guess / computer helpJer2015-03-31 12:50:47
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