ICSE Class 7 Answered
If U = {1, 3, 5, 7, 9, 11, 13, 15, 17}
A = { 1, 3, 5, 7}, B = {1, 3, 9, 11}
Find :
(i) A' (ii) B' (iii) (A 
B)' (iv) (A 
B)'
B)' (iv) (A B)'
Asked by Topperlearning User | 11 Aug, 2014, 12:47: PM
Expert Answer
Its given that,
U = {1, 3, 5, 7, 9, 11, 13, 15, 17}
A = { 1, 3, 5, 7}, B = {1, 3, 9, 11}
Hence, A 
B = {1, 3}
A 
B = {1, 3, 5, 7, 9, 11}
Now, (i) A' = {elements which are in U and not in A} = {9, 11, 13, 15, 17}
(ii) B' = {elements which are in U and not in B} = {5, 7, 13, 15, 17}
(iii) (A B)' = {elements of U which are not in A B } = {5, 7, 9, 11, 13, 15, 17}
(iv) (A B)' = {elements of U which are not in A B } = {13, 15, 17}
Answered by | 11 Aug, 2014, 02:47: PM
