Question

Match roster forms with the set builder form.

(i) {P, R, I, N, C, A, L}
(ii) {0}
(iii) {1, 2, 3, 6, 9, 18}
(iv) {3, -3}

(a) {x : x is a positive integer and is a divisor of 18}
(b) {x : x is an integer and x2 – 9 = 0}
(c) {x : x is an integer and x + 1 = 1}
(d) {x : x is a letter of the word PRINCIPAL}

Answer 1

(i) = principal, (ii) = 0, (iii) = 1+1 =2 + 1 = 3 + 3 = 6 + 3 = 9 + 9 =18