Question

Construct a component set of real numbers with a countable set of limit points.

Answer 1

Construct a set of real numbers with a countable set of limit points:
Let S = { x | x = N+[1/(2^n)] or x = N, N natural, n natural }
The limit points are the natural numbers

Syllabus of Class 10 CBSE 2014-15 - http://scoremore.beep.com/syllabus-of-class-10-cbse-2014-15-2014-07-16-1.htm