P$7\mathrm{.}9.$ Add these pairs of binary numbers:

a$.*1101\mathrm{.}11$ and $101\mathrm{.}111$;

b$.1011$ and $101$ ;

C$.10001\mathrm{.}111$ and $0101\mathrm{.}001.$

P$7\mathrm{.}11.$ Express the following decimal numbers in binary, octal, and hexadecimal forms:

a$.173$ ;

b$.299\mathrm{.}5$ ;

c$.735\mathrm{.}75$ ;

d$.*313\mathrm{.}0625$ ;

e$.112\mathrm{.}25$