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WORKBOOK



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               4)  Let A and B be any two sets. If n(A B ) 6,n((A B) ) 14          , find n(A’).










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                            
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                                                     
               5)  If n(A B) 15, n(A B) 6 , and n(A) 2 n(B) , find n(B A)  .







                                                              
               6)  Let A and B be any two sets. If  3 n(A B)  4 n(B A)   6 n(A B)  and n(A  B) 27  , then find
                   n(A) n(B)  .














               7)  Out of 45 students in a class 15 select English, 13 don't select Math, 6 select none of them. How many
                   of them take one subject only?















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