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If X and Y are two sets such that X cu...

If X and Y are two sets such that X `cup Y` has 18 elements, X has 8 elements and Y has 15 elements how many elements does X `cap Y` have ?

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Knowledge Check

  • If the sets A has p elements, B has q elements, then number of elements is AxxB is

    A
    p+q
    B
    p+q+1
    C
    pq
    D
    `p^2`

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