Find the LUB and GLB of the following sets: (i) (left{x mid x=2^{-p}+3^{-q} ight.) for some (left.p,

Find the LUB and GLB of the following sets:

(i) \(\left\{x \mid x=2^{-p}+3^{-q}\right.\) for some \(\left.p, q \in \mathbb{N}\right\}\)

(ii) \(\left\{x \in \mathbb{R} \mid 3 x^{2}-4 x<1\right\}\)

(iii) the set of all real numbers between 0 and 1 whose decimal expression contains no nines