if a has 4 element b has 8 element then the minimum and maximum number of elements in (AUB) are ------------- select one; a.both a and b? or b.4,12 or c.4,8 or d.none of the mention
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Step-by-step explanation:
Symbol Meaning Example
{ } Set: a collection of elements {1,2,3,4}
A ∪ B Union: in A or B (or both) C ∪ D = {1,2,3,4,5}
A ∩ B Intersection: in both A and B C ∩ D = {3,4}
A ⊆ B Subset: A has some (or all) elements of B {3,4,5} ⊆ D
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