Question

Let A = {1, 2, {3, 4}, s, d, θ} , Which of the following statements are true/false and why?

1. 3 ∈ A

2. {1, {3, 4}} ∈ A

3. {1, 2, 3} ⊂ A

4. Φ ∈ A

5. 1 ⊂ A 

Answer 1

1. 3 ∈ A - False

2. {1, {3, 4}} ∈ A -  True

3. {1, 2, 3} ⊂ A - False

4. Φ ∈ A - False

5. 1 ⊂ A (1 score each) - False