Q1 of 145 Page 4

Which of the following are sets? Justify your answer.

The collection of all persons of Kolkata whose assessed annual incomes exceed (say) Rs 20 lakh in the 4 financial years 2016-17.


As the collection of all persons of Kolkata whose assessed annual incomes exceed (say) Rs 20 lakh in the 4 financial years 2016-17 is known and well – defined.

∴, this is a set.


More from this chapter

All 145 →
1

Which of the following are sets? Justify your answer.

The collection of all those students of your class whose ages exceed 15 years.


 1

Which of the following are sets? Justify your answer.

The collection of all rich persons of Kolkata.


 1

Which of the following are sets? Justify your answer.

The collection of all interesting dramas written by Shakespeare.


 2

Let A be the set of all even whole numbers less than 10.

(i) Write A in the roster from.


(ii) Fill in the blanks with the approximate symbol ∉ or ϵ :


(a) 0 …. A


(b) 10 …. A


(c) 3 …. A


(d) 6 …. A