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Using laws of set algebra, show that If `AnnB^(prime)=varphi,` show that `AsubB`

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Using laws of set algebra, show that If A 'uuB^=U , show that AsubB

For any set A and B, show that (A-B)=(AnnB')

Let Aa n dB be two sets. Using properties of sets prove that: (i) AnnB^(prime)= Φ = AsubB (ii) A 'uuB= U =AsubB

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For any two sets of A and B, prove that: B^(prime)uuA '=>AsubB

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