Question Number 95127 by unknown last updated on 23/May/20
Commented by unknown last updated on 23/May/20
$$\mathrm{Find}\:\mathrm{the}\:\mathrm{solution}\:\left({n},{k}\right).\:\mathrm{If}\:\left({n},{k}\right)\:\mathrm{is}\:\mathrm{natural}\:\mathrm{number}. \\ $$