Answers

2014-07-06T19:04:20+05:30
No. Ф contains no element that is null set but {Ф} contains one element that is a singleton set.
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2014-07-06T20:53:56+05:30
Ф indicates null set n thus it contains zero elements but {Ф} is a singleton set containing d element Ф n thus it contains 1 element
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