Question

Let A = (1, 2, 3, 4, 5, 6}. Insert the appropriate symbol ∈ or ∉ in the blank spaces.

(i) 5 ...... A

(ii) 8 ...... A

(iii) 0 ..... A

(iv) 4 ......A

(v) 2 .......A

(vi) 10..... A

Answer 1

(i) 5 ∈ A

Since 5 occurs in A, thus 5 ∈ A.

(ii) 8 ∉ A

Since 8 not occur in A, thus 8 ∉ A.

(iii) 0 ∈ A

Since 0 not occur in A, thus 0 ∈ A.

(iv) 4 ∈ A

Since 4 occurs in A, thus 4 ∈ A.

(v) 2 ∈ A

Since 2 occurs in A, thus 2 ∈ A.

(vi) 10 ∉ A

∵ A = { 1,2,3, 4,5,6}

Thus, elements of set A are 1, 2, 3, 4, 5, and 6.

Since 10 not occurs in A, Thus 10 ∉ A