All Questions
33
questions
2
votes
1
answer
293
views
Counting permutations, with additional restrictions
There are 10 slots and some marbles: 5 red, 3 blue, 2 green, how many ways can you fit those marbles into those slots?
Those marbles fit in 10!/(5! 3! 2!) ways
...
- 404
2
votes
0
answers
84
views
Difference Sets
suppose we have a set $$P=\{p_1,p_2,...,p_K\}$$
where $$1\leq p_k\leq N , k=1,...,K \qquad \& \quad p_k \in \mathbb{N} $$ and $p_k$'s are distinct.
We calculate the differences as: $$d=p_i-p_j\mod ...
- 3,989
2
votes
2
answers
215
views
Combination/Permutation Question
I'm trying to solve a programming challenge, and I have narrowed down all the challenge to a combination/permutation problem.
I ended up with 5 possible scenarios, and I need to find all possible ...
- 141