Solution:
Provided that A= {1, 2, {3, 4}, 5}
(i) {3, 4} ⊂ A is incorrect
As here 3 ∈ {3, 4}; in which, 3∉A.
(ii) {3, 4} ∈A is correct
{3, 4} is an element of A.
Solution:
Provided that A= {1, 2, {3, 4}, 5}
(i) {3, 4} ⊂ A is incorrect
As here 3 ∈ {3, 4}; in which, 3∉A.
(ii) {3, 4} ∈A is correct
{3, 4} is an element of A.