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0 votes
0 answers
45 views

Probability that the maximum number of dice with the same face is k

Let say we have $N$ dice with 6 faces. I'm asking my self, what is the probability that the maximum number of dice with the same face is $k$? In more precise terms, what is the size of this set? \...
Lorenzo Vittori's user avatar
1 vote
2 answers
59 views

How to rigorously interpret and transform "equal chance" in different ways?

Put $100$ identical balls into $10$ identical boxes in a way that each ball enters each box with an equal chance. What's the probability that no box is empty? I have solved it but like to discuss ...
Tony B's user avatar
  • 2,036
1 vote
0 answers
45 views

Number theoretic calculation of probability problem involving partitions.

This question asks for a specific miscalculation of how large chance that I get at least one call every day of the week if I in total get 12 calls during a week. If we instead consider the question ...
mathreadler's user avatar
  • 26.1k
3 votes
1 answer
337 views

Add together numbers to make final number?

I have this problem where I want to add some numbers together to make a final number. I ask how many ways are there to make this final number using exactly k numbers? Here is the condition: (1) The ...
Dustin Jordan's user avatar
3 votes
1 answer
183 views

How to calculate the distribution of the last digit of an integer partition?

Definition Let's denote $P(n,k)$ represents the set of ordered partitions of integer $n$ into $k$ parts. For example, $P(5,3)=\{(1,1,3),(1,2,2),(1,3,1),(2,1,2),(2,2,1),(3,1,1)\}$ (there is another ...
vapor's user avatar
  • 375
6 votes
1 answer
234 views

When is the sum of first $n$ numbers equal to the sum of the next $k$ numbers?

When is the sum $1+2+\cdots + n = (n+1) + (n+2) + \cdots +(n+k)$? The easiest solution $(n,k)$ is $(2,1)$. For example, $1+2 = 3$. Do any others exist? Roots of $(n+k)^2 + (n+k) = 2n^2 +2n$ give ...
CGUT's user avatar
  • 63