Joint sets are sets with common element/s. Disjoint sets are sets without any common element/s.
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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".
Disjoint sets are sets whose intersection, denoted by an inverted U), produces the null or the empty set. If a set is not disjoint, then it is called joint. [ex. M= {1,2,A} N = {4,5,B}. S intersection D is a null set, so M and N are disjoint sets.
Two sets are considered disjoint if they have no elements in common.
When two sets do not have any elements common between them,they are said to be disjoint.
No, only if both sets are empty. The intersection of disjoint sets is always empty.