Discrete Math Set Problem
52135
Show that $A \setminus ( B \setminus C ) \equiv ( A \setminus B) \cup ( A \cap C )$
142886
Find set with maximal cardinality given constraints
108807
Subset of a cartesian product
69748
Semi-Ambiguous Combinatorics Problem
93748
Alternative to Subsets to generate k-combinations
101804
Problem concerning the use of Pigeonhole (Box) principle
136290
a mathematical problem on inequalities
91485
Finding an uncountable chain of subsets the integers
77547
Find integers $a,b,c,d$ such that
79568
Cardinality of the set $D$
94295
Pigeonhole-principle with two choices
153072
Guessing a subset of $\{1,...,N\}$
111954
Computing the cardinality of a combinatorial set
82487
Define a mathematical set
11824
A maximization problem
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
10839
Problem in Cardinality and Order