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    i understand this is testing for an empty argument but my code 'if words.empty?' still seems to raise the same errors: 'get_count': wrong number of arguments (0 for 1) (ArgumentError) from'
    am i missing something?

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    hi i seem to have lost all the tests written for this, would it be possible to supply them again? in addition to this, very confused with the last test. as i seem to recall, (1111111111) resulted to 25. surely this is more, as all the 1's combine together to produce 10^2 combinations? please explain!