Question

Which of the following collections are sets? (1) The collection of prime numbers. (ii) The collection of easy subtopics in this chapter. (ii) The collection of good teachers in your school. (iv) The collection of girls in your class. (v) The collection of odd natural numbers.​

Answer 1

Answer:

1) The collection of prime numbers

4) The collection of girls in your class

5) The collection of odd natural numbers

Step-by-step explanation:

The reason that 1, 4 and 5 are sets is because they are well-defined. You cannot have an opinion on which numbers are prime/ odd and whether the person is a girl or a boy. Otherwise, the collection of good teachers can vary, you may like a teacher who your friend dislikes. The same goes for the subjects.