Which of the following are sets ? Justify your answer.

The collection of questions in this chapter.

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The collection of questions in this chapter is a well-defined collection because one can definitely identify a question that belongs to this chapter.

Hence, this collection is a set.

Similar Questions

Write the following as intervals :

 $\{ x:x \in R, - 4\, < \,x\, \le \,6\} $

Which of the following are examples of the null set

$\{ y:y$ is a point common to any two parallellines $\} $

Examine whether the following statements are true or false :

$\{a\} \subset\{a, b, c\}$

Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:

$\{ x:x$ is an even natural mumber $\}  \ldots \{ x:x$ is an integer $\} $

State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $x$ is prime $\} $