Question

Write down the following sets in set builder form:

(i) {10, 20, 30, 40, 50}

(ii) {a, e, i, o, u}

(iii) {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}

Answer 1

(i) Let A = {10, 20, 30, 40, 50}

∴ A = {x/x = 10n, n ∈ N and n ≤ 5}

(ii) Let B = {a, e, i, o, u}

∴ B = {x/x is a vowel of English alphabets}

(iii) Let C = {Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday}

∴ C = {x/x is a day of a week}