### In the following, state whether A = B or not :

(i) A = {a, b, c, d}; B = {d, c, b, a}(ii) A = {4, 8, 12, 16}; B = {8, 4, 16, 18}

(iii) A = {2, 4, 6, 8, 10}; B = {x: x is positive even integer and x ≤ 10}

(iv) A = {x: x is a multiple of 10}; B = {10, 15, 20, 25, 30 ...}

**Answer**

**(i)**A = {a, b, c, d}; B = {d, c, b, a}

Both set has exactly same element a, b, c, and d.

Hence A = B

**(ii)**A = {4, 8, 12, 16}; B = {8, 4, 16, 18}

12 and 18 are two element which are not contain by both set A and B.

Hence, A ≠ B

**(iii)**A = {2, 4, 6, 8, 10}

Positive even integer less than 10 are 2, 4, 6, 8 and 10.

Hence, A = B

**(iv)**A = {x: x is a multiple of 10}

15 and 25 are not multiple of 10.

Hence,A ≠ B

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