Solution:
(i) The statement is false.
Each element of {a, b} is an element of {b, c, a}.
(ii) The statement is true.
It is known that a, e are two vowels of the English alphabet.
Examine whether the following statements are true or false: (i) {a, b} ⊄ {b, c, a} (ii) {a, e} ⊂ {x: x is a vowel in the English alphabet}