Let A = {ϕ, {ϕ}, 1, {1, ϕ}, 2}. Which of the following are true? (i) 2 ⊂ A (ii) {2, {1}} ⊄A

Answers:

(i) This statement is False

Reason – 2 is not a subset of set A, it is an element of set A.

(ii) This statement is True

Reason – {2, {1}} is not a subset of set A.