Which three IP addresses are considered private addresses $??$

$($Choose three$)$

$172\mathrm{.}17\mathrm{.}254\mathrm{.}4$

$172\mathrm{.}68\mathrm{.}83\mathrm{.}35$

$198\mathrm{.}168\mathrm{.}6\mathrm{.}18$

$192\mathrm{.}168\mathrm{.}5\mathrm{.}29$

$128\mathrm{.}37\mathrm{.}255\mathrm{.}6$

$10\mathrm{.}234\mathrm{.}2\mathrm{.}1$