1.

मान लीजिए कि `A={1,2}` और `B={3,4,5}` ज्ञात कीजिए। (i) `AxxB` (ii) `BxxA` (iii) `BxxB` (iv) `AxxAxxA`

Answer» (i)`Axxb={1,2}xx{3,4,5}`
`={(1,3),(1,4),(1,5),(2,3),(2,4),(2,5)}`
(ii) `BxxA={3,4,5)}xx{1,2}`
`={(3,1),(3,2),(4,1),(4,2),(5,1),(5,2)}`
(iii) `BxxB={3,4,5}xx{3,4,5}`
`=(3,3),(3,4),(3,5),(4,3),(4,4),(4,5),(5,3),(5,4),(5,5)}`
(iv) `AxxAxA={1,2}xx{1,2}xx{1,2}`
`{(1,1,1),(1,1,2),(1,2,1),(1,2,2),(2,1,1),(2,1,2),(2,2,1),(2,2,2)}`


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