यदि `U={11,12,13,14……………,20},A={11,12,13,14}` और `B={14,16,18,20}` तो निम्नलिखित प्रत्येक को ज्ञात कीजिए-
(i) `A’nnB’` (ii) `A’uuB’`
(iii) `(AuuB)` (iv) `(AnnB)’`
(v) `A’-B’` (vi) `B’-A’`

Explanation

(i) {15,17,19} (ii) {11,12,13,15,16,17,18,19,20}`
(iii) `{15,17,19}` (iv) {11,12,13,15,16,17,18,19,20}
(v) {16,18,20} (vi) {11,12,13}