# Let A = {ϕ,

(i) True

Φ is a member of set A. Hence, true.

(ii) True

{ Φ} is a member of set A. Hence, true.

(iii) False

1 alone is not a member of A. Hence, false.

(iv) False

We can see that 2 is a member of set A, {2, Φ} is not. Hence, false

(v) True

2 is a member of set A. Hence, true.

(vi) True

{1} is not a member of set A.

(vii) True

Neither {2} and nor {1} is a member of set A. Hence, true.

(viii) True

All three are members of set A. Hence, true.

(ix) False

{{ϕ}} is not a member of set A. Hence, false.

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