Q. 1 K4.1( 8 Votes )

Which of the following are sets? Justify your answer.

The collection of all rich persons of Kolkata.

Answer :

As the collection of all rich persons of Kolkata may vary from person to person. Someone considers a person whose income is Rs 1 lakh per annum as a rich person, and someone considers a person whose income is Rs 1 crore per annum as a rich person. Here, the set is not well – defined.

, this is not a set


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