Counting Principles. Selecting, while having constants
38037
A problem with my reasoning in a problem about combinations
72843
Parity of number of factors up to a bound?
52166
SELECT COUNT(*) AS count - How to use this count
95755
Counting the population of integers
16722
Proving Gaussian Integers are countable
136848
Find the number of nonzero elements
29232
Find total number of relations that are equivalence as well as partial order set
153072
Guessing a subset of $\{1,...,N\}$
146098
Number of nonempty subsets of a set with $n$ elements
139505
Peano/Presburger axioms - "find" numbers lower or equal than another number
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
99900
Pigeonhole principle application
20221
Combinatorics - Removing Double Counted Cases
55199
Number Theory in a Choice-less World
145712
The amount of VS The number of, etc
152485
Reliably determine the number of elements in an array
1643
Number of reflexive relations defined on a set A with n elements