State whether the following statements are true or false: (i) 1 ∈ {1, 2, 3} (ii) a ⊂ {b, c, a} (iii) (a) ∈ (a, b, c} (iv) {a, b} = {a, a, b, b, a} (v) The set {x: x + 8 = 8} is the null set.