Question Number 110463 by Rio Michael last updated on 29/Aug/20
$$\mathrm{Find}\:\mathrm{the}\:\mathrm{gcd}\left({n}−\mathrm{1},{n}+\mathrm{1}\right) \\ $$
Commented by mr W last updated on 29/Aug/20
$${if}\:{n}={odd}\:{then}\:{gcd}\left({n}−\mathrm{1},{n}+\mathrm{1}\right)=\mathrm{2} \\ $$$${if}\:{n}={even}\:{then}\:{gcd}\left({n}−\mathrm{1},{n}+\mathrm{1}\right)=\mathrm{1} \\ $$
Commented by Rio Michael last updated on 29/Aug/20
$$\mathrm{thank}\:\mathrm{you}\:\mathrm{sir} \\ $$