Answer :

Disjoint sets are those sets which have no element in common. So, for that A∩B = ø

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

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

Set B = {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}

∴ A ∩ B = {e}

Hence, A and B are not 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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