Examine each of the following statements is true or false.

(i) {a, b, c, d} and {a, b, c} are disjoint sets.

(ii) {1, 2, 3, 4} and {5, 6, 7} are disjoint sets.

(iii) {p, q, r,} and {a, b} are disjoint sets.

(iv) {a} and {a, b} are disjoint sets.

(v) {2, 5, 7, 9} and {4, 6} are disjoint sets.

(vi) {x : x is a odd number} and {x : x is a even number} are disjoint sets.

(vii) {a, e, i, o, u} and {a, b, c} are disjoint sets.

Answers:

(i) false

(ii) true

(iii) true

(iv) false

(v) true

(vi) true

(vi) false