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Which of the following statement is fals...

Which of the following statement is false:
a .`A-B=A-(AnnB)` b. `A-B=A-(AnnB)` c. `A-B=A-B '` d. `A-B=(AuuB)-B`

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Option b is false as `A−B` is not equal to` A−(A∩B) `
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