Which of the following pairs of sets are disjoint?

(i) {1, 2, 3, 4} and {x: x is a natural number and 4 ≤ x ≤ 6}


(ii) {a, e, i, o, u} and {c, d, e, f}


(iii) {x: x is an even integer} and {x: x is an odd integer}


(i) Let us assume, A = {1, 2, 3, 4}


And, B = {x: x is a natural number and 4 x 6}


= {4, 5, 6}



Hence, A and B are not disjoint.


(ii) Let us assume, A = {a, e, i, o, u}


And, B = {c, d, e, f}



Hence, A and B are disjoint


(iii) Let us assume, A = {x: x is an even integer}


And, B = {x: x is an odd integer}



Hence, A and B are disjoint


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