Question Number 104664 by ~blr237~ last updated on 23/Jul/20
$$\:\:\left(\mathrm{1}−{lna}\right)\left(\mathrm{1}−{lnb}\right)…….\left(\mathrm{1}−{lnx}\right)\left(\mathrm{1}−{lny}\right)\left(\mathrm{1}−{lnz}\right)=\mathrm{0}\:\:???? \\ $$
1-lna-1-lnb-1-lnx-1-lny-1-lnz-0-