ON THE NATURAL DENSITY OF THE RANGE OF THE TERMINATING NINES FUNCTION

@article{Kennedy1989ONTN,
  title={ON THE NATURAL DENSITY OF THE RANGE OF THE TERMINATING NINES FUNCTION},
  author={R. K. Kennedy and Curtis N. Cooper and V. Drobot and F. Hickling},
  journal={International Journal of Mathematics and Mathematical Sciences},
  year={1989},
  volume={12},
  pages={805-808}
}
Noting that the expression (_n__) gives the number of terminating nines tl tO t which occur up to n but not including n, we will denote the above expression by t(n) and call t the "terminating nines function". The natural density of the set T= it(n): n=1,2,3, ...} will be determined. 
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References

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