यदि `A={1,2,3,4},B={3,4,5,6}, C={5,6,7,8}` और `D={7,8,9,10}` तो निम्नलिखित ज्ञात कीजिए।
(i) `AuuB` (ii) `AuuC`
(iii) `BuuC` (iv) `BuuD`
(v) `AuuBuuC` (vi) `AuuBuuD`
(vii) `BuuCuuD`

Explanation

(i) `AuuB={1,2,3,4,5,6}`
(ii) `AuuC={1,2,3,45,6,7,8}`
(iii) `BuuC={3,4,5,6,7,8}`
(iv) `BuuD={3,4,5,6,7,8,9,10}`
(v) `A={1,2,3,4},B={3,4,5,6}` और `C={5,6,7,8}`
अतः `AuuBuuC={1,2,3,4,5,6,7,8}`
(vi) `A={1,2,3,4}B={3,4,5,6}` और `D={7,8,9,10}`
अतः `AuuBuuD={1,2,3,4,5,6,7,8,9,10}`
(vii) `B={3,4,5,6}C={5,6,7,8}` और `D={7,8,9,10}`
अतः `BuuCuuD={3,4,5,6,7,8,9,10}`