Question 1080696
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If the number of elements in the finite set is equal to n, then the number os all subsets of this set is equal to {{{2^n}}}.


It includes the empty set and the subset which coincides with the given set.
The last subset is called <U>"improper subset</U>".



See the lesson 

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/word/misc/How-many-subsets-are-there-in-a-given-finite-set-of-n-elements.lesson>How many subsets are there in a given finite set of n elements?</A>

in this site.