Picking certain pairs according to a condition
21205
Select/Delete with Sublist elements?
153072
Guessing a subset of $\{1,...,N\}$
151947
Finding a pair of functions with properties
54719
How to handle equality constraints in this problem?
108807
Subset of a cartesian product
131414
How to get a list of pairs into the form $(x,y)$?
30585
Picking a random element from a set
144767
Picking integers satisfying a limit
35430
selecting where two columns are in a set
4002
A function that accepts a pair or a list of pairs
17181
How to write a query for exact pairs of groups
134252
Optimize pairings of two types of points with respect to the maximum distance inside any pair
13873
Finding an optimal solution to a linear program among solutions of another
37051
Choosing numbers without consecutive numbers.
70637
Selecting items in a list based on multiple conditions
42358
Find a Borel subset satisfying the condition
85463
Minimum value selection