let U= {1,2,3,a,b,c,d,e,f}, A= {2,3,a,c,e,f}, B= {3,c,d,f}, and c={3,c,e,f}

(a) Find (B intersect A) union (B intersect C)?
(b) Find (C-B)' intersect A?

Hi skeeter:

U = {1,2,3,a,b,c,d,e,f}
A = {2,3,a,c,e,f}
B = {3,c,d,f}
C = {3,c,e,f} 

(a) (B intersect A) = {3,c,f}
    (B intersect C) = {3,c,f}
    (B intersect A) union (B intersect C) = {3,c,f} union {3,c,f} 
                                          = {3,c,f}

(b) (C-B) = {e}
    (C-B)' = {1,2,3,a,b,c,d,f}
    (C-B)' intersect A = {1,2,3,a,b,c,d,f} intersect {2,3,a,c,e,f}
                       = {2,3,a,c,f} 

Hope this helps. If you need clarification, please ask. 

websearcher-ga

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