Which of the following is not correct IP address?

Question $20$Answer

a$.$

$120\mathrm{.}25\mathrm{.}320\mathrm{.}5/24$

b$.$

$20\mathrm{.}0\mathrm{.}0\mathrm{.}5/25$

c$.$

$10\mathrm{.}2\mathrm{.}2\mathrm{.}25/14$

d$.$

$147\mathrm{.}66\mathrm{.}31\mathrm{.}50/22$

e$.$

$172\mathrm{.}10\mathrm{.}58\mathrm{.}80/26$