Does phi in empty set be written in curly braces or not?

1.	Does phi in empty set be written in curly braces or not?
Answer» <html><body><p><strong>Answer:</strong></p><p><a href="https://interviewquestions.tuteehub.com/tag/yes-749457" style="font-weight:bold;" target="_blank" title="Click to know more about YES">YES</a> you can <a href="https://interviewquestions.tuteehub.com/tag/write-746491" style="font-weight:bold;" target="_blank" title="Click to know more about WRITE">WRITE</a> in <a href="https://interviewquestions.tuteehub.com/tag/curly-940725" style="font-weight:bold;" target="_blank" title="Click to know more about CURLY">CURLY</a> <a href="https://interviewquestions.tuteehub.com/tag/brackets-903413" style="font-weight:bold;" target="_blank" title="Click to know more about BRACKETS">BRACKETS</a></p><p><strong>Step-by-step <a href="https://interviewquestions.tuteehub.com/tag/explanation-455162" style="font-weight:bold;" target="_blank" title="Click to know more about EXPLANATION">EXPLANATION</a>:</strong></p><p>bcoz brackets in mathematics can be used as u want</p></body></html>

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