Cardinal number of countable and uncountable infinite set

The cardinal number of infinite set, N = {1, 2, 3, 4, ...} (or any other set that is equivalent to N), is denoted by the symbol ℵ₀ (read aleph-null). The symbol “c” is used to denote the cardinal number of an infinite set, like the set of all real numbers or the set of points in an open interval or the set of points in a plane.

Please drag and drop the selected option in the right place or type it instead

Show Answer Hide Answer

Reference

Introduction to Differential Calculus (Systematic Studies with Engineering Applications for Beginners) - 2012