Which of the following are sets ? Justify your answer.
A collection of novels written by the writer Munshi Prem Chand.
A collection of novels written by the writer Munshi Prem Chand is a well-defined collection because one can definitely identify a book that belongs to this collection.
Hence, this collection is a set.
Write the solution set of the equation ${x^2} + x - 2 = 0$ in roster form.
What universal set $(s)$ would you propose for each of the following :
The set of isosceles triangles
In the following state whether $\mathrm{A = B}$ or not :
$A = \{ x:x$ is a multiple of $10\} ;B = \{ 10,15,20,25,30 \ldots \ldots \} $
Which of the following sets are finite or infinite.
$\{1,2,3, \ldots 99,100\}$
Which of the following are sets ? Justify your answer.
A team of eleven best-cricket batsmen of the world.