Question

Which statement is true : *

1. {a, b} ⊄ {b, c, a}
2. {b, c} ⊂ {a, {b, c}}
3. {a, a, b, b} = {a, b}
4. {Φ} ⊂ {a, b, c}​

Answer 1

Answer:

b, c} ⊂ {a, {b, c}} this statement is true