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Find the LUB and GLB of the following sets: (i) {x | x = 2^(−p)+3^(−q )for...

Find the LUB and GLB of the following sets:

(i) {x | x = 2^(−p)+3^(−q )for some p,q ∈ N}

(ii) {x ∈ R | 3x^(2)−4x < 1}

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

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