यदि U=`{1,2,3,4,5,6,7,8,9}`, A=`{2,3,6,8}` तथा B=`{2,3,5,7}`तो ज्ञात करो:
`(i) A' " " (ii) B' " "(iii) (A-B)' " " (iv) (B-A)'`

Explanation

`:' Uu = {1,2,3, 4,5,6,7,8,9}`,
(i) `A = {2,3,5,7}` (दिया है )
अतः `A ' = {1,3,5,7,9}`
(ii) `B = {2,3,5,7}` (दिया है)
अतः `B' = {1,4,6,8,9}`
(iii) `A - B = {2,4,6,8} - {2,3,5,7}`
`= {4,6,8}`
अतः `(A-B)' = {1,2,3,5,7,9}`
(iv) `B - A = {2,3,5,7} - {2,4,6,8}`
`= {3,5,7}`
अतः `(B - A)' = {1,2,4,6,8,9}`.