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Question

If universal set ξ={a,b,c,d,e,f,g,h},A={b,c,d,e,f},B={a,b,c,g,h} and C={c,d,e,f,g} find : C(BA)
Thus find the number of elements in the above set.

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Solution

Intersection of two sets has the common elements of both the sets.
So, BA= { b,c }
C(BA) will have elements of C which are not in (BA)
So, C(BA)= { d,e,f,g }
There are thus 4 elements in the above set.

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