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Is (A’)’=A?(a) True(b) FalseThis question was posed to me in homework.This interesting question is from Complement of a Set in division Sets of Mathematics – Class 11

Answer»

The CORRECT answer is (a) True

Explanation: Complement of a set A is a set that CONTAINS elements of U which are not the elements of A. So, A’=U-A= U∩A’.

(A’)’ = (U∩A’)’ = U’∪A = A.



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