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Mr. Dubey • 51.43K Points
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Q.) Which of the following set (s) are empty ?

(A) {x : x = x}
(B) {x : x ≠ x}
(C) {x : x = x2}
(D) {x : x ≠ x2}
Correct answer : Option (B) - {x : x ≠ x}

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