In the following state whether $A=B$ or not :

$A=\{a, b, c, d\} ; B=\{d, c, b, a\}$

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$A=\{a, b, c, d\} ; B=\{d, c, b, a\}$

The order in which the elements of a set are listed is not significant.

$\therefore A=B$

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Match each of the set on the left in the roster form with the same set on the right described in set-builder form:

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