How many ways to choose group of numbers with constraints
37051
Choosing numbers without consecutive numbers.
128051
Calculating possible option of switching pairs in group
45448
Minimum number of $k$-partitions of a set of size $n$ to enumerate all $n \choose k$ combinations
143448
How to find the boundaries of groups of contiguous sequential numbers?
142016
one to one distinct restriction on selection
41365
Choice function for collection of arbitrary finite sets. AC required?
24091
How many ways can $r$ nonconsecutive integers be chosen from the first $n$ integers?
137573
How many different numbers can you make with the following digits?
77171
How to find unique multisets of n naturals of a given domain and their numbers?
153072
Guessing a subset of $\{1,...,N\}$
62959
How to find GCD, LCM on a set of numbers
46999
How many fixed points in a permutation
6273
Is there a possibility to choose fairly from three items when every choice can only have 2 options
69827
Set conditions at a permutation
13260
Choosing $101$ numbers from $\{1, 2, \dots , 200\}$.
86787
How to find the max number(s) in a list with tied numbers
100565
Property of sup of a set of numbers