A school is upgrading its website and will require students to create a password $10$ access their marks online. In order to create secure passwords, students will be required to meet certain conditions.

a Determine the total number of possible $5$ character passwords that can be created using each

of the following requirements:

$01112$:$3,41516,7,8\mathrm{.}9$

i$.$ the digits $0$ to $9,$ where digits can be repeated $(1$ mark$)$

pigits

letters

ii$.$ the digits $0$ to $9,$ where digits cannot be repeated $(1$ mark$)$