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Question
If A = `[(1,1),(2,2)] , "B" = [(1,2),(3,4)]` then find |AB|.
Solution
AB = `[(1,1),(2,2)][(1,2),(3,4)]`
AB = `[(4,6),(8,12)]`
∴ `|"AB"| = |(4,6),(8,12)|`
∴ |AB| = 48 - 48
⇒ |AB| = 0
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