On the 61-st, the 62-nd, and the 63-rd Smarandache’s problems

Krassimir T. Atanassov
Notes on Number Theory and Discrete Mathematics, ISSN 1310–5132
Volume 4, 1998, Number 4, Pages 175–182
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Krassimir T. Atanassov
Math. Research Lab, P.O.Box 12,
Sofia-1113, BULGARIA

References

1. C. Dumitrescu, V. Seleacu, Some notions and questions in number theory, Erhus Univ. Press, Glendale, 1994.
2. F. Smarandache, Only problems, not solutions!. Xiquan Publ. House, Chicago, 1993.
3. M. Vassilev and K. Atanassov, Some representations related to n!. Notes on Number Theory and Discrete Mathematics, Vol. 5 (1999), No. 1, 33-36.