This one should work for all of the test cases except that you have some numerical precision issues with the last test case. Please replace it with a numerical comparison that takes into account precision (my code is returning numbers with no decimal point but the test code returns something less pretty).
Swap the input arguments
Back to basics 2 - Function Path
Vectorize the digits of an Integer
Arrange vector in ascending order
Penny flipping - calculate winning probability (easy)
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