CSIR NET Maths previous year question papers

Single choice · Metric Spaces

1. A

   A is a closed subset of $\mathbb{R}^{2}$ but B is not a closed subset of $\mathbb{R}^{2}$.

2. B

   B is a closed subset of $\mathbb{R}^{2}$ but A is not a closed subset of $\mathbb{R}^{2}$.

3. C

   Both A and B are closed subsets of $\mathbb{R}^{2}$.

4. D

   Neither A nor B is a closed subset of $\mathbb{R}^{2}$.