Questions on Sets, Relations and Functions

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Sets, Relations and Functions are of utmost importance in the study
of mathematics. Most of the students find these topics difficult and
hence they tend to avoid studying these in Higher Secondary level. As
a result they face a lot of conceptual problems in degree classes. I
have collected some random problems on sets, relations and functions
here. I hope that the curious readers may try to solve these.

The file can be downloaded here.