The set $\left\{x: x \neq x\right\}$ may be equal to
Answer & explanation
Correct answer: option 4
Since there is no number which is not equal to itself, the set $\{x: x \neq x\}=\varphi$
The set $\left\{x: x \neq x\right\}$ may be equal to
Correct answer: option 4
Since there is no number which is not equal to itself, the set $\{x: x \neq x\}=\varphi$