pigeon hole principle [arrangement]
42438
Minimizing Gender Regularity in a linear arrangement of boys and girls
142180
There are 'n' candies and 't' boxes. Find the number of ways to place the candies in the boxes for each of the conditions (given in the problem).
75852
Using Pigeonhole Principle to prove two numbers in a subset of $[2n]$ divide each other
81567
Pigeon hole principle to prove $a-b=9$ in subset.
114792
Mathematical strategy puzzle
143573
Problem (1.8) A Path to Combinatorics Solution Verification.
85023
Permutation of n objects with restriction of adjacent pairs
130771
Sets and the principle of inclusion and exclusion
39382
Examples of the Pigeonhole Principle
5801
Combinatorial proof help
38018
Arrangement of integers in a row such that the sum of every two adjacent numbers is a perfect square.
87431
$n-$circular arrangement problem
104309
Pigeon-Hole Principle Common Sum
38809
In how many ways can the letters of word $PERMUTATIONS$ be arranged if there are always 4 letters between P and S?
135408
Solving permutation problem sequentially.
43076
Chess tournament combinatorics
150281
Am I on the right track to figure out this combinatorics problem?