A_{x\x are set of days in a week}
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what is joint set
subsets ?
-reina ramirez
Two sets are said to be "disjoint" if they have no common element - their intersection is the empty set. As far as I know, "joint" is NOT used in the sense of the opposite of disjoint, i.e., "not disjoint".
{1,2,3,4,5....}