Question

Let A= {1, 2, {3, 4,}, 5}. Which of the following statements are incorrect and why?

(i) {3, 4}⊂ A

(ii) {3, 4}}∈ A

(iii) {{3, 4}}⊂ A

(iv) 1∈ A

(v) 1⊂ A

(vi) {1, 2, 5} ⊂ A

(vii) {1, 2, 5} ∈ A

(viii) {1, 2, 3} ⊂ A

(ix) Φ ∈ A

(x) Φ ⊂ A

(xi) {Φ} ⊂ A

Answer 1

$<marquee><b>1st one is incorrect </marquee>$

Answer 2

Φ € A is incorrect, because there are elements in A....

Φ is not subset of A, subsets can be write in the form of { x },

1 € A incorrect

1 is subset of A is incorrect...

hope it help you