#### Write the following sets in roster form and also in description form:

(i) {x | x = 4n, n ∈ W and n < 5}

(ii) {x : x = n^{2}, n ∈ N and n < 8}

(iii) y : y = 2x – 1, x ∈ W and x < 5}

(iv) {x : x is a letter in word ULTIMATUM}

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