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CodingBat code practice

peter@norvig.com numbers

Description:Exercises about number theory, or counting.

Number sequences: collatz H   longest_collatz H   pythag H   ramanujan H  

Primes, divisors, and factors: divisors H   perfects H   find_amicable H  

Combinatorics, counting: num_paths H   change H   perfect_shuffle  number_perfect_shuffles H   permutations H   nrectangles H   combinations H  
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