Question

Let A = {a,b,{c,d},e}.
State, whether the following statement is true or false and why?

(i) {c,d} $\subset$ A

Answer 1

Solution:
Since A= {a,b{c,d},e}
Given statement {c,d}$\subset$ A is false because {c,d} is an element of A but not the subset of A.
Therefore, {c,d}$\in$ A.