(i) Given: a is an element of set A

this means a ∈ A

(ii) Given: b is not an element of A

this means b ∉ A

(iii) Given: A is an empty set

and B is a non – empty set

this means A = ɸ

and B ≠ ɸ

(iv) Given: In set A, total number of elements is 6

This means, |A| = 6

(v) Given: 0 is a whole number but not a natural number

This means 0 ∈ W but 0 ∉ N