Need help on counting problem that involves placing 3 sets of indistinguishable cupcakes on a 3x3 board.
42270
Combinatorics - Painting the Unit Squares of a 3x3 Square
136449
Combinatorics problem on $20$ people, $12$ months, and distinguishable groups
120822
A 10x10 table filled with 0 to 9 numbers
7919
The pigeonhole principle - how to solve questions like that?
84134
How to get started on this statistics problem?
85104
Counting train stops using combinatorics
140806
How do I tackle this combinatorics problem about married couples around a table?
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).
123690
Olympiad question on Pigeonhole principle
49181
Find a generating function involving a tiling problem
118407
Birthday Problem applied to collisions
56509
What is the correct way to think about this yet another balls/boxes problem?
130851
Squaring the plane, with consecutive integer squares. And a related arrangement
15349
Combinatorics riddle: keys and a safe
150536
Combinatorics, choosing 3 elements from 100
69194
Partitioning sum of squares
35899
Simple logic problem: Finding largest and smallest number among 3 numbers