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[" 14."A" and "B" are two sets and their...

[" 14."A" and "B" are two sets and their intersection has "3" elements.If "A" has "1920" more subsets than "B],[" has,then the number of elements of "A" union "B" is: "],[[" (a) "12," (b) "14," (c) "15," (d) "16]]

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