Today I learned unordered sets with replacement, like an example, how you distribute 10 dollar bills to 4 people.
It's like label four people as A, B, C and D, put them as 4 letters of cards into a box. And pick one letter from the box and put it back, then go with it by 10 times.
The number of times you get with the particular letter is the dollars that person labeled as that letter get.
So the ways of calculation for how many ways you can distribute it is, n=10 ,N=4
10 + (4-1)/(4-1) = 286
Then tomorrow we are going to learn how we can extract ordered sets with replacement from unordered sets with replacement,
expecting it, Go Wallace Tiger, you can deal with it : )
