Question $3(12\%)$: Convert the following binary numbers to their octal and hexadecimal equivalent values.

$(101011\mathrm{.}1010001{)}_2$

$(101001\mathrm{.}101{)}_2$

Question $4(16\%)$: Convert the following decimal numbers to their octal and hexadecimal equivalent values.

$(1089\mathrm{.}5625{)}_{10}$

$(1981\mathrm{.}28125{)}_{10}$